2 USGS Streamgages · New York Slough system
Cole C flows and levels
Cole C is gauged at 2 USGS streamgages in California, each tracked by Rivermatics. It feeds the Cole Creek. It drains into the New York Slough system. Drainage area at the gauges ranges from 21 square miles at Cole C near Salt Springs Dam, CA up to 22 at Cole C below Diversion Dam near Salt Springs Dam, CA.
Gauges on this river, upstream to downstream
Ordered by drainage area, which is how far down the river each gauge sits. April and July figures are long-term median daily flows for that month from the USGS record — historical normals, not a forecast and not today's reading.
| Gauge | State | Drainage sq mi | Elevation ft | April p50 cfs | July p50 cfs | Forecast |
|---|---|---|---|---|---|---|
| Cole C near Salt Springs Dam, CA | CA | 21 | 5,920 | 129.6 | 3.7 | — |
| Cole C below Diversion Dam near Salt Springs Dam, CA | CA | 22 | — | 19.2 | 1.4 | — |
Typical flow by month at Cole C below Diversion Dam near Salt Springs Dam, CA
The furthest-downstream gauge on this river, so the fullest flow it carries here. Long-term daily discharge percentiles from the USGS record (up to 38 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 1.9 | 4.4 | 41.1 | |
| February | 3.4 | 10 | 45.6 | |
| March | 3.4 | 13.5 | 53.9 | |
| April | 3.4 | 19.2 | 62.3 | |
| May | 3.3 | 14.5 | 71.9 | |
| June | 2.5 | 4.9 | 28.5 | |
| July | 0.4 | 1.4 | 16.8 | |
| August | 0.1 | 0.2 | 1.7 | |
| September | 0.1 | 0.2 | 0.5 | |
| October | 0.1 | 0.2 | 1.7 | |
| November | 0.2 | 1.8 | 13.6 | |
| December | 0.8 | 3.6 | 20.7 |
All values in cubic feet per second (cfs).
Common questions
- When does the Cole C run highest?
- April, on the long-term record at Cole C below Diversion Dam near Salt Springs Dam, CA — the furthest-downstream gauge Rivermatics tracks on this river. Median daily flow there is about 19.2 cfs that month, against 0.2 cfs in August, the lowest. Upstream gauges peak on their own schedule; the table on this page gives April and July for each.
- How many gauges are on the Cole C?
- Rivermatics tracks 2 USGS streamgages on the Cole C, across California. Each has its own page with the site's full flow record and monthly normals. The river may carry other gauges that publish neither daily values nor discharge statistics; those are not tracked here.
- What river system is the Cole C part of?
- The Cole C drains into the New York Slough system — it is a tributary somewhere in that chain, following the flowpath down to its terminal river. Rivermatics builds this from the USGS/geoconnex reference-mainstem network rather than from names.
- Can I use Cole C data for flood or safety decisions?
- No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.
Other rivers in the New York Slough system
- Nf Stanislaus River 4 gauges
- Tuolumne River 4 gauges
- Cherry C 3 gauges
- Angels C 2 gauges
- Bear River 2 gauges
- Big C 2 gauges
- Merced River 2 gauges
- Nf Mokelumne River 2 gauges