Water Data for the Nation

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Scheduled Maintenance Notice
USGS will be performing maintenance on the time series data processing system beginning at 09:00 EDT on September 10, 2026. During this period, delivery of the latest time series data will be delayed. The maintenance is expected to finish within 2 hours, after which all backlogged time series data will be processed and delivered to WDFN web portals and APIs.

Browse monitoring locations within Trinity County, California

005N007E24P001M - USGS-404700123200001
005N007E25G001H - USGS-404600123200001
006N006E19G001H - USGS-405200123320001
032N008W05P001M - USGS-403900122470001
033N008W05A001M - USGS-404400122470001
033N009W23A001M - USGS-404200122510001
033N010W08H001M - USGS-404400123010001
033N012W05F001M - USGS-404400123150001
034N008W21J001M - USGS-404700122460001
034N011W35D001M - USGS-404500123050001
035N008W04N001M - USGS-405400122470001
035N008W15LS01M - USGS-405300122450001
035N008W30QS01M - USGS-405100122450001
037N007W05P001M - USGS-410500122420001
06105 Domestic Aggregate Users - USGS-90610500017
Altoona Mine DR a EF Trinity R NR Trinity Center - USGS-410734122321601
Altoona Mine Wetlands NR Trinity Center CA - USGS-400502122422301
Big C NR Hayfork CA - USGS-11528440
Bolts Hill Mine Tunnel Inlet NR Lewiston CA - USGS-404515122481601
Bolts Hill Mine Tunnel Midpoint NR Lewiston CA - USGS-404507122483001
Bolts Hill Mine Tunnel Outlet NR Lewiston CA - USGS-404500122483001
Browns C NR Douglas City CA - USGS-11525900
Buckeye Arm of Trinity Lake NR Trinity Dam CA - USGS-404852122482701
Canyon C BL Conrad Gulch NR Junction City CA - USGS-404723123032001
Canyon C a Junction City CA - USGS-11526300
Carrville Pond NR Carrville CA - USGS-410311122420001
Coffee C NR Trinity Center CA - USGS-11523700
Coffee C a Coffee CA - USGS-11523500
Coffee C a Hwy 3 NR Carrville CA - USGS-410502122421701
Combined Flow of 11474750 + 11474780 CA - USGS-11474781
Conrad C Trinity R CA - USGS-404802123025800
Crow C AB Confluence of EF Trinity R NR Trinity CE - USGS-410740122315401
Dan Rice C NR Callahan CA - USGS-11523100
Deadwood C a Lewiston CA - USGS-11525520
EF Trinity Arm of Trinity LK NR Trinity Center CA - USGS-405953122373301
EF Trinity R 1.2 MI BL Devils C NR Trinity Center - USGS-410259122355201
EF Trinity R BL Altoona Mine DR NR Trinity Center - USGS-410731122321801
EF Trinity R BL County RD 106 NR Trinity Center CA - USGS-410031122370901
EF Trinity R US Altoona Mine Drain NR Castella CA - USGS-410736122320901
EF Trinity R a Horse Heaven Mdw NR MT Shasta CA - USGS-410928122271201
EF of NF Trinity R .53 MI AB Barney Gulch - USGS-404940123072901
Eastman Dredge Pond NO 1 NR Lewiston CA - USGS-404516122465001
Eastman Dredge Pond NO 2 NR Lewiston CA - USGS-404509122465001
Eastman Dredge Pond NO 3 NR Lewiston CA - USGS-404516122463901
Eastman Gulch NR Lewiston CA - USGS-404520122464101
Grass Valley C NR French Gulch CA - USGS-11525550
Grass Valley C NR Lewiston CA - USGS-11525630
Grass Valley C a Fawn Lodge NR Lewiston CA - USGS-11525600
Gwin C Trinity R CA - USGS-404954123035000
Has Mine Tunnel Inlet NR Junction City CA - USGS-404345123031101
Hayfork C NR Hayfork CA - USGS-11528400
Hayfork C NR Hyampom CA - USGS-11528500
Hayfork C Trib NR Hyampom CA - USGS-11528480
Hocker Flat Mine Tunnel Outlet NR Junction City CA - USGS-404500123040801
Indian C NR Douglas City CA - USGS-11525670
Kekawaka C BL Kekawaka C PH Div NR Zenia CA - USGS-11474780
Kekawaka C PH NR Zenia CA - USGS-11474750
Little Grass Valley C NR Lewiston CA - USGS-11525580
Mad R AB Ruth Res NR Forest Glen CA - USGS-11480390
Mad R BL Ruth Res NR Forest Glen CA - USGS-11480410
Mad R NR Forest Glen CA - USGS-11480500
Mill C NR Burnt Ranch CA - USGS-11527010
NF Trinity R a Helena CA - USGS-11526500
New R NR Denny CA - USGS-11527500
New R a Denny CA - USGS-11527400
New R a Denny Campground NR Denny CA - USGS-405557123233401
Panther C NR Denny CA - USGS-11527550
Papoose Arm of Trinity Lake NR Trinity Dam CA - USGS-404806122425801
Poison Gulch Pond NR Weaverville CA - USGS-404410123002001
Post C NR Forest Glen CA - USGS-11528090
Rarick C Trinity R CA - USGS-404840123033000
Rush C NR Lewiston CA - USGS-11525530
Ruth Res NR Forest Glen CA - USGS-11480400
Ruth Res a Dam CA - USGS-402203123255201
SF Trinity R BL Hyampom CA - USGS-11528700
SF Trinity R NR China Flat CA - USGS-11529500
SF Trinity R NR Hyampom CA - USGS-11528200
SF Trinity R NR Salyer CA - USGS-11529000
SF Trinity R a Forest Glen CA - USGS-11528100
Salt C Trib NR Zenia CA - USGS-11474430
Slate C NR Trinity Alps CA - USGS-11525300
Slattery Pond NR Weaverville CA - USGS-404402123011101
Swift C NR Forest Glen CA - USGS-11528110
Tamarack C a EF Trinity R NR MT Shasta CA - USGS-410916122273801
Tom Lang Gulch NR Douglas City CA - USGS-11525650
Trinity Lake NR Lewiston CA - USGS-11525400
Trinity Lake NR Trinity Center CA - USGS-410214122413201
Trinity R AB Coffee C NR Trinity Center CA - USGS-11523200
Trinity R AB Grass Valley C NR Lewiston CA - USGS-11525540
Trinity R AB Lewiston Turnpike BR a Lewiston CA - USGS-11525525
Trinity R AB NF Trinity R NR Helena CA - USGS-11526400
Trinity R BL Limekiln Gulch NR Douglas City CA - USGS-11525655
Trinity R BL Rush C NR Lewiston CA - USGS-11525535
Trinity R NR Burnt Ranch CA - USGS-11527000
Trinity R NR China Flat CA - USGS-11528000
Trinity R NR Douglas City CA - USGS-11526000
Trinity R NR Trinity Center CA - USGS-11524000
Trinity R a Big Flat Day Use Area NR Big Bar CA - USGS-404427123125701
Trinity R a Douglas City CA - USGS-11525854
Trinity R a E Side RD BR NR Carrville CA - USGS-410311122414501
Trinity R a Hayden Flat NR Big Bar CA - USGS-404656123204501
Trinity R a Junction City CA - USGS-11526250
Trinity R a Lewiston CA - USGS-11525500
Trinity R a Reo Stott BR NR Douglas City CA - USGS-11525652
Union Hill Gulch NR Douglas City CA - USGS-403927122561401
Union Hill Pond NR Douglas City CA - USGS-403929122555601
Weaver C NR Douglas City CA - USGS-11525800
Weaver C NR Weaverville CA - USGS-11525750
Wilson C NR Mina CA - USGS-11474570

Important

This list uses USGS Water Data OGC APIs. View the Swagger documentation for this API