Maine Water Science Center
| Atmospheric Sites | |
| 434829070465101 | CORNISH PRECIPITATION AT CORNISH, ME |
| 443305070323701 | RUMFORD PRECIPITATION AT RUMFORD, ME |
| 444227069561801 | MERCER PRECIPITATION NEAR MERCER, ME |
| 444657071074401 | ERROL PRECIPITATION AT ERROL, NH |
| 445210069571901 | NORTH ANSON PRECIPITATION NEAR NORTH ANSON, ME |
| 450306069531101 | BINGHAM PRECIPITATION AT BINGHAM, ME |
| 450705069384801 | KINGSBURY PRECIPITATION AT KINGSBURY, ME |
| 451031069185301 | DOVER-FOXCROFT PRECIPITATION NEAR DOVER-FOXCROFT, ME |
| 451105069270801 | ABBOT PRECIPITATION AT ABBOT VILLAGE, ME |
| 451603069350101 | BLANCHARD PRECIPITATION AT BLANCHARD, ME |
| 452025069574701 | THE FORKS PRECIPITATION AT THE FORKS, ME |
| 452156069371801 | SHIRLEY PRECIPITATION AT SHIRLEY MILLS, ME |
| 453405067254501 | VANCEBORO PRECIPITATION AT VANCEBORO, ME |
| 464200069425701 | NINEMILE BRIDGE PRECIPITATION AT NINEMILE BRIDGE, ME |
| 470646069052501 | DICKEY PRECIPITATION AT DICKEY, ME |
| Ground-Water Sites | |
| 432310070393301 | ME-YW 807 Sanford, Maine |
| 434955070261401 | ME-CW 2026 North Windham, Maine |
| 435103070191701 | ME-CW2028 Whitney Well near Gray, Maine |
| 435453070013601 | ME-CW26 Brunswick, Maine |
| 440213070203201 | ME-ANW1135 Poland, Maine |
| 440810069553601 | ME-KW872A Litchfield, Maine |
| 440823070291501 | ME-OW1214 Oxford, Maine |
| 440918069564001 | ME-KW766 Litchfield, Maine |
| 441226069502201 | ME-KW891 Liberty Lane near Gardiner, Maine |
| 441801069455501 | ME-KW887 Augusta Arboretum Bedrock Well Augusta, Maine |
| 442238068154101 | ME-HW171 McFarland Hill near Bar Harbor, Maine |
| 442450068175201 | ME-HW172 Crooked Road near Bar Harbor, Maine |
| 442822069081301 | ME-WOW85 Morrill, Maine |
| 443113068115101 | ME-HW181 South of U.S. Route 1 in Sullivan, Maine |
| 443145068131801 | ME-HW180 North of U.S. Route 1 in Sullivan, Maine |
| 443647070552302 | ME-OW400A Middle Dam, Maine |
| 444302070252401 | ME-FW916 Weld, Maine |
| 444950068220602 | ME-HW1A Amherst, Maine |
| 445148069513301 | ME-SMW61 Madison, Maine |
| 445227067520101 | ME-WW797 Township T24MD BPP (Hadley Lakes) |
| 445319068560101 | ME-PEW456 Kenduskeag, Maine |
| 450713067162801 | ME-WW796 Calais, Maine |
| 453629068531801 | ME-PEW594 Millinocket, Maine |
| 464259067572901 | ME-ARW906 Presque Isle, Maine |
| 471457068353001 | ME-ARW890 Fort Kent, Maine |
| Surface Water Sites | |
| 01010000 | ST. JOHN RIVER AT NINEMILE BRIDGE, ME |
| 01010070 | BIG BLACK RIVER NEAR DEPOT MOUNTAIN, ME |
| 01010500 | ST. JOHN RIVER AT DICKEY, ME |
| 01011000 | ALLAGASH RIVER NEAR ALLAGASH, ME |
| 01013500 | FISH RIVER NEAR FORT KENT, ME |
| 01014000 | ST. JOHN RIVER BELOW FISH RIVER, AT FORT KENT, ME |
| 01015800 | AROOSTOOK RIVER NEAR MASARDIS, ME |
| 01017000 | AROOSTOOK RIVER AT WASHBURN, ME |
| 01017550 | WILLIAMS BROOK AT PHAIR, ME |
| 01017960 | MEDUXNEKEAG RIVER ABOVE SOUTH BRANCH MEDUXNEKEAG RIVER NEAR HOULTON, ME |
| 01018000 | MEDUXNEKEAG RIVER NEAR HOULTON, ME |
| 01018035 | MEDUXNEKEAG RIVER AT LOWERY ROAD NEAR HOULTON, ME |
| 01018500 | ST. CROIX RIVER AT VANCEBORO, ME |
| 01019000 | GRAND LAKE STREAM AT GRAND LAKE STREAM, ME |
| 01021000 | ST. CROIX RIVER AT BARING, ME |
| 01021050 | ST. CROIX RIVER AT MILLTOWN, ME |
| 01021200 | DENNYS RIVER AT DENNYSVILLE, ME |
| 01021470 | LIBBY BROOK NEAR NORTHFIELD, ME |
| 01021480 | OLD STREAM NEAR WESLEY, ME |
| 01021500 | MACHIAS RIVER AT WHITNEYVILLE, ME |
| 01022260 | PLEASANT RIVER NEAR EPPING, ME |
| 01022294 | EAST BRANCH BEAR BROOK NEAR BEDDINGTON, ME |
| 01022295 | WEST BRANCH BEAR BROOK NEAR BEDDINGTON, ME |
| 01022330 | NARRAGUAGUS RIVER AT DEBLOIS, ME |
| 01022500 | NARRAGUAGUS RIVER AT CHERRYFIELD, ME |
| 01022840 | OTTER CREEK NEAR BAR HARBOR, MAINE |
| 01027200 | NORTH BRANCH PENOBSCOT RIVER NEAR PITTSTON FARM, ME |
| 01029200 | SEBOEIS RIVER NEAR SHIN POND, ME |
| 01029500 | EAST BRANCH PENOBSCOT RIVER AT GRINDSTONE, ME |
| 01030500 | MATTAWAMKEAG RIVER NEAR MATTAWAMKEAG, ME |
| 01031300 | PISCATAQUIS RIVER AT BLANCHARD, ME |
| 01031450 | KINGSBURY STREAM AT ABBOT VILLAGE, ME |
| 01031500 | PISCATAQUIS RIVER NEAR DOVER-FOXCROFT, ME |
| 01034000 | PISCATAQUIS RIVER AT MEDFORD, ME |
| 01034500 | PENOBSCOT RIVER AT WEST ENFIELD, ME |
| 01036390 | PENOBSCOT RIVER AT EDDINGTON, ME |
| 01037380 | DUCKTRAP RIVER NEAR LINCOLNVILLE, ME |
| 01038000 | SHEEPSCOT RIVER AT NORTH WHITEFIELD, ME |
| 01042500 | KENNEBEC RIVER AT THE FORKS, ME |
| 01044550 | SPENCER STREAM NEAR GRAND FALLS, ME |
| 01046500 | KENNEBEC RIVER AT BINGHAM, ME |
| 01047000 | CARRABASSETT RIVER NEAR NORTH ANSON, ME |
| 01048000 | SANDY RIVER NEAR MERCER, ME |
| 01049000 | SEBASTICOOK RIVER NEAR PITTSFIELD, ME |
| 01049265 | KENNEBEC RIVER AT NORTH SIDNEY, ME |
| 01049320 | KENNEBEC RIVER AT FATHER CURRAN BRIDGE AT AUGUSTA, ME |
| 01049500 | COBBOSSEECONTEE STREAM AT GARDINER, ME |
| 01049505 | KENNEBEC RIVER AT GARDINER, ME |
| 01052500 | DIAMOND RIVER NEAR WENTWORTH LOCATION, NH |
| 01053500 | ANDROSCOGGIN RIVER AT ERROL, NH |
| 01054000 | ANDROSCOGGIN RIVER NEAR GORHAM, NH |
| 01054200 | WILD RIVER AT GILEAD, ME |
| 01054300 | ELLIS RIVER AT SOUTH ANDOVER, ME |
| 01054500 | ANDROSCOGGIN RIVER AT RUMFORD, ME |
| 01055000 | SWIFT RIVER NEAR ROXBURY, ME |
| 01055100 | ANDROSCOGGIN RIVER AT JAY, ME |
| 01055220 | DEAD RIVER AT LEEDS, ME |
| 01055500 | NEZINSCOT RIVER AT TURNER CENTER, ME |
| 01057000 | LITTLE ANDROSCOGGIN RIVER NEAR SOUTH PARIS, ME |
| 01059000 | ANDROSCOGGIN RIVER NEAR AUBURN, ME |
| 01059555 | BACK RIVER CREEK AT PLEASANT COVE NEAR WOOLWICH, ME |
| 01063310 | STONY BROOK AT EAST SEBAGO, ME |
| 01063995 | SEBAGO LAKE NEAR NORTH WINDHAM, ME |
| 01064118 | PRESUMPSCOT RIVER AT WESTBROOK, ME |
| 01064500 | SACO RIVER NEAR CONWAY, NH |
| 01066000 | SACO RIVER AT CORNISH, ME |