| Site number on fig. 1 | Station Name | Station Number | Latitude | Longitude | 2000 | 2001 | 2002 |
|---|
| 1 | Union Hill Gulch near Douglas City | 403927122561401 | 40°39′27″ | 122°56′18″ | x | | |
| 2 | Trinity River at Big Flat Day Use Area near Big Bar | 404427123125701 | 40°44′27″ | 123°13′01″ | | | x |
| 3 | Eastman Dredge Pond No.2 near Lewiston | 404509122465001 | 40°45′09″ | 122°46′54″ | x | | |
| 4 | Eastman Dredge Pond No.1 near Lewiston | 404516122465001 | 40°45′16″ | 122°46′54″ | x | | |
| 5 | Eastman Gulch near Lewiston | 404520122464101 | 40°45′20″ | 122°46′45″ | x | | |
| 6 | Trinity River at Hayden Flat near Big Bar | 404656123204501 | 40°46′56″ | 123°20′49″ | | | x |
| 7 | Canyon Creek below Conrad Gulch near Junction City | 404723123032001 | 40°47′23″ | 123°03′24″ | | | x |
| 8 | Papoose Arm of Trinity Lake near Trinity Dam | 404806122425801 | 40°48′06″ | 122°43′02″ | | | x |
| 9 | Buckeye Arm of Trinity Lake near Trinity Dam | 404852122482701 | 40°48′52″ | 122°48′31″ | | x | |
| 10 | East Fork of North Fork Trinity River 0.53 mile above Barney Gulch | 404940123072901 | 40°49′40″ | 123°07′33″ | | x | |
| 11 | New River at Denny Campground near Denny | 405557123233401 | 40°55′56″ | 123°23′38″ | | | x |
| 12 | East Fork Trinity Arm of Trinity Lake near Trinity Center | 405953122373301 | 40°59′53″ | 122°37′37″ | x | x | |
| 13 | East Fork Trinity River below County Road 106 near Trinity Center | 410031122370901 | 41°00′31″ | 122°37′13″ | | x | x |
| 14 | Trinity Lake near Trinity Center | 410214122413201 | 41°02′14″ | 122°41′36″ | x | x | |
| 15 | East Fork Trinity River 1.2 mile below Devils Creek near Trinity Center | 410259122355201 | 41°02′59″ | 122°35′56″ | | x | x |
| 16 | Carrville Pond near Carrville | 410311122420001 | 41°03′11″ | 122°42′04″ | x | | |
| 17 | Coffee Creek at Hwy 3 near Carrville | 410502122421701 | 41°05′02″ | 122°42′21″ | x | | |
| 18 | Trinity River above Coffee Creek near Trinity Center | 11523200 | 41°06′41″ | 122°42′20″ | x | | |
| 19 | East Fork Trinity River below Altoona Mine Drain near Trinity Center | 410731122321801 | 41°07′31″ | 122°32′22″ | x | x | x |
| 20 | East Fork Trinity River Upstream Altoona Mine Drain near Castella | 410736122320901 | 41°07′36″ | 122°32′13″ | x | x | x |
| 21 | Crow Creek above Confluence of East Fork Trinity River near Trinity | 410740122315401 | 41°07′40″ | 122°31′58″ | | x | x |
| 22 | Tamarack Creek at East Fork Trinity River near Mt. Shasta | 410916122273801 | 41°09′16″ | 122°27′42″ | | x | x |
| 23 | East Fork Trinity River at Horse Heaven Meadow near Mt. Shasta | 410928122271201 | 41°09′28″ | 122°27′16″ | | x | x |