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Maine Geological Survey Maps

Maine Geological Survey Maps

The Maine Geological Survey provides the people and businesses of Maine with essential geologic information about the land where we live and work.

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Significant sand and gravel aquifers in the Hadley Lake quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 02-157
Significant sand and gravel aquifers in the Hamlin quadrangle, Maine

Craig D. Neil and Michael E. Foley

Maine Geological Survey, Open-File Map 02-121
Significant sand and gravel aquifers in the Lagrange quadrangle, Maine

Lauren E. Foster, Troy T. Smith, and Dale F. Doughty

Maine Geological Survey, Open-File Map 02-163
Significant sand and gravel aquifers in the Lake Auburn East quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 02-149
Significant sand and gravel aquifers in the Lille quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-128
Significant sand and gravel aquifers in the Limestone quadrangle, Maine

Craig D. Neil and Michael E. Foley

Maine Geological Survey, Open-File Map 02-124
Significant sand and gravel aquifers in the Madawaska quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-136
Significant sand and gravel aquifers in the Mapleton quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 02-106
Significant sand and gravel aquifers in the New Sweden quadrangle, Maine

Craig D. Neil and Michael E. Foley

Maine Geological Survey, Open-File Map 02-122
Significant sand and gravel aquifers in the Number Nine Lake quadrangle, Maine

Craig D. Neil and Craig D. Neil

Maine Geological Survey, Open-File Map 02-116
Significant sand and gravel aquifers in the Oxbow East quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 02-109
Significant sand and gravel aquifers in the Packard Lake quadrangle, Maine

Craig D. Neil and Craig D. Neil

Maine Geological Survey, Open-File Map 02-117
Significant sand and gravel aquifers in the Paulette Brook quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-140
Significant sand and gravel aquifers in the Picard Brook quadrangle, Maine

Craig D. Neil and Michael E. Foley

Maine Geological Survey, Open-File Map 02-119
Significant sand and gravel aquifers in the Portage Lake East quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 02-142
Significant sand and gravel aquifers in the Presque Isle quadrangle, Maine

Craig D. Neil and Craig D. Neil

Maine Geological Survey, Open-File Map 02-111
Significant sand and gravel aquifers in the Speckled Mountain quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 02-147
Significant sand and gravel aquifers in the St. Agatha quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-139
Significant sand and gravel aquifers in the St. John quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-132
Significant sand and gravel aquifers in the Van Buren quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-130
Significant sand and gravel aquifers in the Violette Stream quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-129
Significant sand and gravel aquifers in the Washburn quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 02-143
Significant sand and gravel aquifers in the Westfield quadrangle, Maine

Craig D. Neil and Craig D. Neil

Maine Geological Survey, Open-File Map 02-115
Significant sand and gravel aquifers in the Wheelock quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-133
Significant sand and gravel aquifers in the York Ridge quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 02-105
Simplified bedrock geologic map of Maine

Marc Loiselle

Maine Geological Survey, Open-File Map SBGMM. Map showing the simplified bedrock geology of Maine. Inset maps show regional metamorphic zones and generalized Northern Appalachian geology. The map also includes a generalized geologic cross section. A table and text on the reverse describe the geologic history of Maine and how it relates to plate tectonics.
Surficial geology of the Bath quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-145
Surficial geology of the Lewiston quadrangle, Maine

Carol T. Hildreth

Maine Geological Survey, Open-File Map 02-154
Surficial geology of the Minot quadrangle, Maine

Carol T. Hildreth

Maine Geological Survey, Open-File Map 02-231
Surficial geology of the Speckled Mountain quadrangle, Maine

Woodrow B. Thompson

Maine Geological Survey, Open-File Map 02-144
Surficial materials of the Ashland quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-53
Surficial materials of the Bath quadrangle, Maine

Daniel B. Locke and Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-102
Surficial materials of the Big Moose Pond quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-226
Surficial materials of the Bridgewater quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-70
Surficial materials of the Bull Brook quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-87
Surficial materials of the Caribou quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-77
Surficial materials of the Daigle quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-99
Surficial materials of the Doyle Ridge quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-72
Surficial materials of the Easton Center quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-64
Surficial materials of the Easton quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-63
Surficial materials of the Echo Lake quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-65
Surficial materials of the Fort Fairfield NW quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-75
Surficial materials of the Fort Fairfield quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-79
Surficial materials of the Fort Kent North quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-92
Surficial materials of the Fort Kent South quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-95
Surficial materials of the Freeport quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-156
Surficial materials of the Frenchville quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-96
Surficial materials of the Goodwin quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-78
Surficial materials of the Grand Isle quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-98
Surficial materials of the Griswold quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-60
Surficial materials of the Hadley Lake quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-158
Surficial materials of the Hamlin quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-73
Surficial materials of the Hanford quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-84
Surficial materials of the Lake Auburn East quadrangle, Maine

Daniel B. Locke and Carol T. Hildreth

Maine Geological Survey, Open-File Map 02-150
Surficial materials of the Lewiston quadrangle, Maine

Carol T. Hildreth and Daniel B. Locke

Maine Geological Survey, Open-File Map 02-153
Surficial materials of the Lille quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-89
Surficial materials of the Limestone quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-76
Surficial materials of the Madawaska quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-97
Surficial materials of the Mapleton quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-55
Surficial materials of the Mars Hill quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-67
Surficial materials of the McClusky Lake quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-83
Surficial materials of the Monmouth quadrangle, Maine

Daniel B. Locke and Mickael E. Foley

Maine Geological Survey, Open-File Map 02-160
Surficial materials of the Mud Lake quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-85
Surficial materials of the New Sweden quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-74
Surficial materials of the Number Nine Lake quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-68
Surficial materials of the Old Orchard Beach quadrangle, Maine

Michael J. Retelle

Maine Geological Survey, Open-File Map 02-227
Surficial materials of the Oxbow East quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-59
Surficial materials of the Packard Lake quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-69
Surficial materials of the Paulette Brook quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-101
Surficial materials of the Picard Brook quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-71
Surficial materials of the Portage Lake East quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-86
Surficial materials of the Presque Isle quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-62
Surficial materials of the Speckled Mountain quadrangle, Maine

Woodrow B. Thompson

Maine Geological Survey, Open-File Map 02-103
Surficial materials of the Spinney Brook quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-61
Surficial materials of the Square Lake East quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-81
Surficial materials of the Square Lake West quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-80
Surficial materials of the St. Agatha quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-100
Surficial materials of the St. John quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-93
Surficial materials of the Stockholm quadrangle, Maine

Michael E. Foley

Maine Geological Survey, Open-File Map 02-82
Surficial materials of the Van Buren quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-91
Surficial materials of the Violette Stream quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-90
Surficial materials of the Washburn quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-88
Surficial materials of the Westfield quadrangle, Maine

Craig D. Neil

Maine Geological Survey, Open-File Map 02-66
Surficial materials of the Wheelock quadrangle, Maine

Thomas K. Weddle

Maine Geological Survey, Open-File Map 02-94
Surficial materials of the York Ridge quadrangle, Maine

Daniel B. Locke

Maine Geological Survey, Open-File Map 02-54
Beach and Dune Geology Aerial Photo: Camp Ellis, Saco Beach, Saco

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-398 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey Open-File Map 11-108)
Beach and Dune Geology Aerial Photo: Coast Guard Beach, River Beach, Hunnewell Beach, Phippsburg

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-457 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-142)
Beach and Dune Geology Aerial Photo: Crescent Beach, Cape Elizabeth

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-407 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-130
Beach and Dune Geology Aerial Photo: Crescent Beach State Park, Crescent Beach, Cape Elizabeth

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-406 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-129 and 11-130)
Beach and Dune Geology Aerial Photo: Crescent Surf Beach, Kennebunk

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-408 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-88)
Beach and Dune Geology Aerial Photo: Crsecent Surf Beach, Parsons Beach, Kennebunk

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-409 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-88 and 11-89)
Beach and Dune Geology Aerial Photo: Curtis Cove, Braketts Point, Granite Point, Biddeford

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-427 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-99)
Beach and Dune Geology Aerial Photo: Drakes Island Beach, Laudholm Beach, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-412 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-86 and 11-87)
Beach and Dune Geology Aerial Photo: Drakes Island Beach, Webhannet River, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-411 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-85 and 11-86)
Beach and Dune Geology Aerial Photo: Ferry Beach, Bay View, Saco

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-400 (Superseded by by Slovinsky and Dickson, 2011, Maine Geological Survey Open-File Maps 11-109 and 110)
Beach and Dune Geology Aerial Photo: Ferry Beach, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-466 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-120)
Beach and Dune Geology Aerial Photo: Ferry Beach State Park, Ferry Beach, Saco

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-399 (Superseded by by Slovinsky and Dickson, 2011, Maine Geological Survey Open-File Maps 11-108 and 11-109)
Beach and Dune Geology Aerial Photo: Ferry Beach, Western Beach, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-465 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-120 and 11-121)
Beach and Dune Geology Aerial Photo: Fishermans Cove, Moody Point, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-441 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-81)
Beach and Dune Geology Aerial Photo: Fort Popham, Atkins Bay, Phippsburg

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-458 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-143)
Beach and Dune Geology Aerial Photo: Fortunes Rocks Beach, Fortunes Rock, Biddeford

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-417 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-101)
Beach and Dune Geology Aerial Photo: Fortunes Rocks Beach, The Pool, Biddeford

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-416 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-102)
Beach and Dune Geology Aerial Photo: Goochs Beach, Kennebunk River, Kennebunk

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-432 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-94)
Beach and Dune Geology Aerial Photo: Goochs Beach, Middle Beach, Kennebunk

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-431 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-93)
Beach and Dune Geology Aerial Photo: Goose Rocks Beach, Batson River, Kennebunkport

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-418 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-95)
Beach and Dune Geology Aerial Photo: Goose Rocks Beach, Kennebunkport

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-420 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-96 and 11-97)
Beach and Dune Geology Aerial Photo: Goose Rocks Beach, Little River, Kennebunkport

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-421 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-97 and 11-98)
Beach and Dune Geology Aerial Photo: Goose Rocks Beach, Smith Brook, Kennebunkport

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-419 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-95 and 11-96)
Beach and Dune Geology Aerial Photo: Grand Beach, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-452 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-118)
Beach and Dune Geology Aerial Photo: Grand Beach, Surfside Beach, Old Orchard Beach

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-451 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-117)
Beach and Dune Geology Aerial Photo: Griffith Head, Reid State Park, Georgetown

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-462 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-145
Beach and Dune Geology Aerial Photo: Half Mile Beach, Little River, Georgetown

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-459 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-144)
Beach and Dune Geology Aerial Photo: Half Mile Beach, Reid State Park, Georgetown

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-460 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-144)
Beach and Dune Geology Aerial Photo: Higgins Beach, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-422 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-126)
Beach and Dune Geology Aerial Photo: Higgins Beach, Spurwink River, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-423 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-126)
Beach and Dune Geology Aerial Photo: Hills Beach, Biddeford

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-425 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-106)
Beach and Dune Geology Aerial Photo: Hills Beach, Fort Hill, Biddeford

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-424 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-105 and 11-106)
Beach and Dune Geology Aerial Photo: Hills Beach, Saco River, Biddeford

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-426 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-107)
Beach and Dune Geology Aerial Photo: Horseshoe Cove, New Barn Cove, Biddeford

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-428 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-100)
Beach and Dune Geology Aerial Photo: Hunnewell Beach, Phippsburg

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-456 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-141)
Beach and Dune Geology Aerial Photo: Hunnewell Beach, Popham Beach, Phippsburg

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-455 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-140)
Beach and Dune Geology Aerial Photo: Jordan Point Beach, Breakwater Farm, Cape Elizabeth

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-405 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-129)
Beach and Dune Geology Aerial Photo: Kennebunk Beach, Middle Beach, Kennebunk

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-430 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-92)
Beach and Dune Geology Aerial Photo: Kinney Shores, Bay View, Saco

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-401 (Superseded by by Slovinsky and Dickson, 2011, Maine Geological Survey Open-File Map 11-110 and 11-111)
Beach and Dune Geology Aerial Photo: Kinney Shores, Goosefare Brook, Saco

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-402 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-111 and 11-112)
Beach and Dune Geology Aerial Photo: Laudholm Beach, Little River, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-413 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-87
Beach and Dune Geology Aerial Photo: Long Beach, Lobster Cove, York

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-433 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-71)
Beach and Dune Geology Aerial Photo: Long Beach, Prebles Point, York

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-434 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-71 and 11-72)
Beach and Dune Geology Aerial Photo: Long Beach, Railroad Avenue, York

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-436 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-74)
Beach and Dune Geology Aerial Photo: Long Beach, York

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-435 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-73)
Beach and Dune Geology Aerial Photo: Lords Point, Strawberry Island, Kennebunk

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-429 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-90 and 11-91)
Beach and Dune Geology Aerial Photo: Main Beach, Ram Island, Cape Elizabeth

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-403 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-127)
Beach and Dune Geology Aerial Photo: Mile Beach, Reid State Park, Georgetown

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-461 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-145)
Beach and Dune Geology Aerial Photo: Mile Stretch Beach, South Point, Biddeford

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-414 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-104)
Beach and Dune Geology Aerial Photo: Mile Stretch Beach, The Pool, Biddeford

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-415 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-103)
Beach and Dune Geology Aerial Photo: Moody Beach, Ogunquit Beach, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-438 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-78 and 11-79)
Beach and Dune Geology Aerial Photo: Moody Beach, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-439 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-79 and 11-80)
Beach and Dune Geology Aerial Photo: Moody Point, Moody Beach, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-440 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-80)
Beach and Dune Geology Aerial Photo: Ocean Park Beach, Old Orchard Beach

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-445 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-112)
Beach and Dune Geology Aerial Photo: Ogunquit Beach, Beach Street, Ogunquit

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-443 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-76 and 11-77)
Beach and Dune Geology Aerial Photo: Ogunquit Beach, Ogunquit

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-444 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-77 and 11-78)
Beach and Dune Geology Aerial Photo: Ogunquit Beach, Ogunquit River, Ogunquit

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-442 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-76)
Beach and Dune Geology Aerial Photo: Old Orchard Beach, Surfside Beach, Old Orchard Beach

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-449 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-115 and 11-116)
Beach and Dune Geology Aerial Photo: Old Orchard Beach, West Grand Avenue, Old Orchard Beach

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-447 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-113 and 11-114)
Beach and Dune Geology Aerial Photo: Parsons Beach, Great Hill, Kennebunk

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-410 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-89 and 11-90)
Beach and Dune Geology Aerial Photo: Pine Point Beach, Pine Point, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-454 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-117)
Beach and Dune Geology Aerial Photo: Pine Point Beach, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-453 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-118)
Beach and Dune Geology Aerial Photo: Popham Beach, Phippsburg

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-473 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-138 and 11-139)
Beach and Dune Geology Aerial Photo: Prouts Neck, East Point, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-463 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-123)
Beach and Dune Geology Aerial Photo: Prouts Neck, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-467 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-122)
Beach and Dune Geology Aerial Photo: Scarborough Beach,

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-464 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-121, 11-122, and 11-123)
Beach and Dune Geology Aerial Photo: Scarborough Beach, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-469 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-125)
Beach and Dune Geology Aerial Photo: Scarborough Beach, Scarborough Beach State Park, Scarborough

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-468 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-124)
Beach and Dune Geology Aerial Photo: Seawall Beach, Morse River, Phippsburg

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-472 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-137 and 11-138)
Beach and Dune Geology Aerial Photo: Seawall Beach, Phippsburg

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-471 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-136 and 11-137)
Beach and Dune Geology Aerial Photo: Seawall Beach, Sprague River, Phippsburg

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-470 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-136)
Beach and Dune Geology Aerial Photo: Short Sands Beach, York

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-437 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-75)
Beach and Dune Geology Aerial Photo: Strawberry Hill Beach, Cape Elizabeth

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-404 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-128)
Beach and Dune Geology Aerial Photo: Surfside Beach, Old Orchard Beach

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-450 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-116)
Beach and Dune Geology Aerial Photo: Wells Beach, Casino Point, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-475 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-82 and 11-83)
Beach and Dune Geology Aerial Photo: Wells Beach, Fishermans Cove, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-474 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-82)
Beach and Dune Geology Aerial Photo: Wells Beach, Webhannet River, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-477 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Map 11-84 and 11-85)
Beach and Dune Geology Aerial Photo: Wells Beach, Wells

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-476 (Superseded by Slovinsky and Dickson, 2011, Maine Geological Survey, Open-file Maps 11-83 and 11-84)
Bedrock geology of North Haven and Vinalhaven Islands

Olcott Gates

Maine Geological Survey, Open-File Map 01-352.
Coastal landslide hazards in the Bailey Island quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-497
Coastal landslide hazards in the Bangor quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-498
Coastal landslide hazards in the Bath quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-500
Coastal landslide hazards in the Belfast quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-501
Coastal landslide hazards in the Biddeford Pool quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-503
Coastal landslide hazards in the Biddeford quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-502
Coastal landslide hazards in the Blue Hill quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-504
Coastal landslide hazards in the Bristol quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-506
Coastal landslide hazards in the Brooklin quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-507
Coastal landslide hazards in the Brunswick quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-509
Coastal landslide hazards in the Bucksport quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-508
Coastal landslide hazards in the Camden quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-510
Coastal landslide hazards in the Cape Elizabeth quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-511
Coastal landslide hazards in the Damariscotta quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-514
Coastal landslide hazards in the Dover East quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-515
Coastal landslide hazards in the Ellsworth quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-516
Coastal landslide hazards in the Freeport quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-517
Coastal landslide hazards in the Friendship quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-518
Coastal landslide hazards in the Hampden quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-519
Coastal landslide hazards in the Hewett Island quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-520
Coastal landslide hazards in the Kittery quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-522
Coastal landslide hazards in the Lincolnville quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-523
Coastal landslide hazards in the Louds Island quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-524
Coastal landslide hazards in the Monhegan quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-525
Coastal landslide hazards in the Newbury Neck quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-527
Coastal landslide hazards in the New Harbor quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-526
Coastal landslide hazards in the Old Orchard Beach quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-528
Coastal landslide hazards in the Orland quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-529
Coastal landslide hazards in the Orrs Island quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-530
Coastal landslide hazards in the Penobscot quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-532
Coastal landslide hazards in the Phippsburg quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-533
Coastal landslide hazards in the Portland East quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-534
Coastal landslide hazards in the Portland West quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-535
Coastal landslide hazards in the Portsmouth quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-536
Coastal landslide hazards in the Prouts Neck quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-537
Coastal landslide hazards in the Rockland quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-538
Coastal landslide hazards in the Salsbury Cove quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-539
Coastal landslide hazards in the Sargentville quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-540
Coastal landslide hazards in the Small Point quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-542
Coastal landslide hazards in the South Harpswell quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-543
Coastal landslide hazards in the Stinson Neck quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-544
Coastal landslide hazards in the Tenants Harbor quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-546
Coastal landslide hazards in the Thomaston quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-547
Coastal landslide hazards in the Waldoboro East quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-548
Coastal landslide hazards in the Waldoboro West quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-549
Coastal landslide hazards in the Westport quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-550
Coastal landslide hazards in the Wiscasset quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-551
Coastal landslide hazards in the Yarmouth quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-552
Coastal landslide hazards in the York Harbor quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-553
Coastal landslide hazards of the Boothbay Harbor quadrangle, Maine

Stephen M. Dickson

Maine Geological Survey, Open-File Map 01-505
Significant sand and gravel aquifers in the Alder Brook quadrangle, Maine

Craig D. Neil, Daniel B. Locke, and Daniel B. Locke

Maine Geological Survey, Open-File Map 01-1.
Significant sand and gravel aquifers in the Andover quadrangle, Maine

Lauren E. Foster, Elizabeth B. Lewis, Craig D. Neil, and Woodrow B. Thompson

Maine Geological Survey, Open-File Map 01-3
Significant sand and gravel aquifers in the Athens quadrangle, Maine

Elizabeth B. Lewis, Daniel B. Locke, Craig D. Neil, and Andres Meglioli

Maine Geological Survey, Open-File Map 01-5
Significant sand and gravel aquifers in the Benedicta quadrangle, Maine

Craig D. Neil, Daniel B. Locke, and Daniel B. Locke

Maine Geological Survey, Open-File Map 01-11
Significant sand and gravel aquifers in the Big Lake quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 01-338
Significant sand and gravel aquifers in the Bingham quadrangle, Maine

Elizabeth B. Lewis, Daniel B. Locke, Craig D. Neil, and Andreas Meglioli

Maine Geological Survey, Open-File Map 01-13
Significant sand and gravel aquifers in the Black Mountain quadrangle, Maine

Lauren E. Foster, Elizabeth B. Lewis, Craig D. Neil, and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-15
Significant sand and gravel aquifers in the Black Nubble quadrangle, Maine

Lauren E. Foster, Elizabeth B. Lewis, Craig D. Neil, and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-16
Significant sand and gravel aquifers in the Bosebuck Mountain quadrangle, Maine

Lauren E. Foster, Elizabeth B. Lewis, Craig D. Neil, and Woodrow B. Thompson

Maine Geological Survey, Open-File Map 01-18
Significant sand and gravel aquifers in the Bottle Lake quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-336
Significant sand and gravel aquifers in the Bowers Mountain quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-334
Significant sand and gravel aquifers in the B Pond quadrangle, Maine

Lauren E. Foster, Elizabeth B. Lewis, Craig D. Neil, and Woodrow B. Thompson

Maine Geological Survey, Open-File Map 01-7
Significant sand and gravel aquifers in the Bradford quadrangle, Maine

Elizabeth B. Lewis, Daniel B. Locke, Craig D. Neil, and Thomas V. Lowell

Maine Geological Survey, Open-File Map 01-19
Significant sand and gravel aquifers in the Brookton quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-341
Significant sand and gravel aquifers in the Cambridge quadrangle, Maine

Elizabeth B. Lewis, Daniel B. Locke, Craig D. Neil, and Glenn C. Prescott Jr

Maine Geological Survey, Open-File Map 01-31
Significant sand and gravel aquifers in the Caratunk quadrangle, Maine

Elizabeth B. Lewis, Daniel B. Locke, Craig D. Neil, and Andreas Meglioli

Maine Geological Survey, Open-File Map 01-32
Significant sand and gravel aquifers in the Carmel quadrangle, Maine

Lauren E. Foster, Troy T. Smith, and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-34
Significant sand and gravel aquifers in the Cedar Lake quadrangle, Maine

Lauren E. Foster, Troy T. Smith, and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-36
Significant sand and gravel aquifers in the Charleston quadrangle, Maine

Elizabeth E. Lewis, Daniel B. Locke, Craig D. Neil, and Thomas V. Lowell

Maine Geological Survey, Open-File Map 01-37
Significant sand and gravel aquifers in the Clifford Lake quadrangle, Maine

Craig D. Neil, Craig D. Neil, and Daniel B. Locke

Maine Geological Survey, Open-File Map 01-326
Significant sand and gravel aquifers in the Crawford Lake quadrangle, Maine

Craig D. Neil and Daniel B. Locke

Maine Geological Survey, Open-File Map 01-327
Significant sand and gravel aquifers in the Crystal quadrangle, Maine

Craig D. Neil, Daniel B. Locke, and Daniel B. Locke

Maine Geological Survey, Open-File Map 01-41
Significant sand and gravel aquifers in the Danforth quadrangle, Maine

Craig D. Neil, Daniel B. Locke, and Daniel B. Locke

Maine Geological Survey, Open-File Map 01-43
Significant sand and gravel aquifers in the Dark Cove Mountain quadrangle, Maine

Craig D. Neil and Craig D. Neil

Maine Geological Survey, Open-File Map 01-318
Significant sand and gravel aquifers in the Deasey Mountain quadrangle, Maine

Lauren E. Foster, Troy T. Smith, and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-45
Significant sand and gravel aquifers in the Dill Hill quadrangle, Maine

Craig D. Neil and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-335
Significant sand and gravel aquifers in the Dimmick Mountain quadrangle, Maine

Elizabeth E. Lewis, Daniel B. Locke, Craig D. Neil, and Andres Meglioli

Maine Geological Survey, Open-File Map 01-47
Significant sand and gravel aquifers in the Dixfield quadrangle, Maine

Lauren E. Foster, Elizabeth E. Lewis, Craig D. Neil, and Glenn C. Prescott Jr

Maine Geological Survey, Open-File Map 01-49
Significant sand and gravel aquifers in the Dixmont quadrangle, Maine

Lauren E. Foster, Troy T. Smith, and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-51
Significant sand and gravel aquifers in the Dover-Foxcroft quadrangle, Maine

Elizabeth B. Lewis, Daniel B. Locke, Craig D. Neil, and Thomas V. Lowell

Maine Geological Survey, Open-File Map 01-53
Significant sand and gravel aquifers in the Duck Lake quadrangle, Maine

Craig D. Neil and Craig D. Neil

Maine Geological Survey, Open-File Map 01-317
Significant sand and gravel aquifers in the East Andover quadrangle, Maine

Lauren E. Foster, Elizabeth E. Lewis, Craig D. Neil, and Glenn C. Prescott Jr

Maine Geological Survey, Open-File Map 01-55 (Superseded by Foster, et al., 2016, Maine Geological Survey Open-File 16-24)
Significant sand and gravel aquifers in the East Dixmont quadrangle, Maine

Lauren E. Foster, Troy T. Smith, and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-58
Significant sand and gravel aquifers in the East Millinocket quadrangle, Maine

Lauren E. Foster, Troy T. Smith, and Thomas K. Weddle

Maine Geological Survey, Open-File Map 01-60
Significant sand and gravel aquifers in the East Winn quadrangle, Maine

Lauren E. Foster, Troy T. Smith, and Glenn C. Prescott Jr

Maine Geological Survey, Open-File Map 01-62
Significant sand and gravel aquifers in the Ellis Pond quadrangle, Maine

Lauren E. Foster, Elizabeth B. Lewis, Craig D. Neil, and Glenn C. Prescott Jr

Maine Geological Survey, Open-File Map 01-64