EIM data last updated on Saturday, July 12, 2025

Marine Water Quality Location Monitoring History


X denotes a year in which data was collected for a given station.

Location Setting Core means routine monthly sampling; Rotating means infrequent, focused sampling.

Location ID Location Description Location Setting 199920002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025
ADM001 Admiralty Inlet - Bush Point Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
ADM002 Admiralty Inlet north - Quimper Point Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
ADM003 Admiralty Inlet south Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
BLL009 Bellingham Bay - Port Frances Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
BLL011 Bellingham Bay - Off Nooksack River Rotating XX
BLL040 Strait of Georgia: Bellingham Bay - east of Chuckanut Rock Core XXXXXXXXXX
BUD002 Budd Inlet - South End Oly Port Rotating XXXX
BUD005 Budd Inlet - Olympia Shoal Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
CMB003 Commencement Bay - Browns Point Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
CMB006 Commencement Bay - Mouth of City WW Rotating XXXX
CRR001 Carr Inlet - Off Green Point Core XXXXXXXXXXXXXXXXXXXXXXX
CSE001 Case Inlet - South Heron Island Core XXXXXXXXXXXXXXXXXX
CSE002 Case Inlet - Off Rocky Point Rotating XXX
DIS001 Discovery Bay - Near Mill Point Rotating X
DNA001 Dana Passage - South of Brisco Point Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
DRA002 Drayton Harbor - Inner Harbor Rotating XX
DUN001 Dungeness Bay Rotating X
DYE004 Dyes Inlet - NE of Chico Bay Rotating X
EAG001 Eagle Harbor - Inner Rotating X
EAP001 East Passage - Southwest of Three Tree Point Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
EAS001 East Sound - Rosario Point Rotating XX
ELB015 Elliott Bay - East of Duwamish Head Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
ELD001 Eld Inlet - Flapjack Point Rotating XXX
ELD002 Eld Inlet - South Flapjack Point Rotating XX
FID001 Fidalgo Bay - East of Anacortes Rotating X
GOR001 Northwest of Gordon Point; between Balch Passage & Toliva Shoal Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
GRG002 Georgia Strait - North of Patos Island Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
GYS004 Grays Harbor - Chehalis River Rotating XXXXXXXXXXXXXXXX
GYS008 Grays Harbor - Mid-South Channel Core XXXXXXXXXXXXXXXXXXXXXXXXXX
GYS009 Grays Harbor - Moon Island Reach Rotating XXXXXXXXXX
GYS015 Grays Harbor - North Whitcomb Flats Rotating XXXXXXXXXX
GYS016 Grays Harbor - Damon Point Core XXXXXXXXXXXXXXXXXXXXXXXXXX
HCB003 Hood Canal - Eldon Hamma Hamma River Core XXXXXXXXXXXXXXXXXXXXXXXXX
HCB004 Hood Canal - Gt. Bend Sisters Point Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
HCB006 Hood Canal - King Spit Bangor Rotating XXXXX
HCB007 Hood Canal - Lynch Cove Core XXXXXXXXXXXXXXXXXXXXXXXX
HCB008 Hood Canal - King Spit, Bangor Post 9/11/2001 station Rotating XX
HCB009 Hood Canal - Hazel Point, Bangor Post 9/11/2001 station Rotating X
HCB010 Hood Canal - Send Creek, Bangor Post 9/11/2001 station Core XXXXXXXXXXXXXXXXXXXXX
HCB013 Hood Canal - north of Hood Canal Bridge, near Salsbury Point Rotating XXX
HLM001 Holmes Harbor - Honeymoon Bay Rotating XX
HND001 Henderson Inlet - Cliff Point Rotating XX
JDF007 Strait of Juan de Fuca - Sequim Bay Goose Point Rotating X
LOP001 Lopez Island - Decatur Island Rotating X
NSQ002 Nisqually Reach - Devils Head Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
OAK004 Oakland Bay - Near Eagle Point Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
OCH014 Port Orchard Channel ? South of Point Bolin; Collias site OCHC14 Core XXXXXXX
PAH003 Port Angeles Harbor - Ediz Hook Head Rotating XXXX
PGA001 Port Gamble - Inner Harbor Rotating XX
PMA001 Port Madison - South of Buoy 65 Rotating X
PNN001 Penn Cove Park Whidbey Island Rotating XXX
POD007 Port Orchard - Inner Rotating X
PSB003 Puget Sound Main Basin - West Point Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
PSS010 Whidbey Basin: Possession Sound - Added post-9/11 for TFR Rotating X
PSS019 Possession Sound - Gedney Island Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
PTH005 Port Townsend Harbor - Walan Point Core XXXXXXXXXXXXXXXXXXXXXXXXX
QMH002 Quartermaster Harbor - Inner Harbor Rotating XXX
RSR837 Strait of Georgia: Rosario Strait - Peapod Rock Core XXXXXXXXXXXXXXXXX
SAR003 Saratoga Passage - East Point Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
SEQ002 Sequim Bay - Northern Rotating XX
SIN001 Sinclair Inlet - Naval Shipyards Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
SJF000 Strait of Juan de Fuca - South of Cattle Point - North Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
SJF001 Strait of Juan de Fuca - South of Cattle Point - Central Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
SJF002 Strait of Juan de Fuca - South of Cattle Point - South Core XXXXXXXXXXXXXXXXXXXXXXXXXXX
SKG003 Skagit Bay - Str. Point Red Buoy Core XXXXXXXXXXXXXXXXXXXX
SUZ001 Port Susan - Kayak Point Rotating X
TOT001 Totten Inlet - Windy Point Rotating XXX
TOT002 Inner Totten Inlet Rotating XXXX
WPA001 Willapa Bay - Willapa River Raymond Rotating XXXXXXXXXXXXXXXX
WPA003 Willapa Bay - Willapa River Johnson Slough Core XXXXXXXXXXXXXXXXXXXXXXXXXX
WPA004 Willapa Bay - Toke Point Core XXXXXXXXXXXXXXXXXXXXXXXXXX
WPA006 Willapa Bay - Nahcotta Channel Core XXXXXXXXXXXXXXXXXXXXXXXXXX
WPA007 Willapa Bay - Long Island, South Jenson Point Core XXXXXXXXXXXXXXXXXXXXXX
WPA008 Willapa Bay - Naselle River Core XXXXXXXXXXXXXXXXXXXXXX
WPA102 Willapa Bay: WRT002 Rotating XX
WPA113 Willapa Bay - Bay Center (Nav-Aid green number 1) - MT008 Core XXXXXXXXXXXXXXXXXXX