USGS Streamgage 11525655
Trinity River below Limekiln Gulch near Douglas City, CA
Trinity River below Limekiln Gulch near Douglas City, CA is USGS streamgage 11525655 in California, monitoring river discharge in hydrologic subbasin 18010211. It drains a watershed of about 810 square miles. Discharge records at this site go back to 1981. Typical flow runs near 532.1 cfs in July and 664.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 810 sq mi
- Gauge elevation
- 1,665 ft
- Subbasin (HUC-8)
- 18010211
- Coordinates
- 40.67261, -122.92055
- USGS site number
- 11525655
- Records begin
- 1981-04-28 (45 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 45 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 | 322.2 | 402.2 | 1,493.8 | |
| February | 324.4 | 412.5 | 1,917.1 | |
| March | 328.7 | 462.3 | 2,214.2 | |
| April | 355.2 | 664.2 | 3,251.3 | |
| May | 420 | 2,001 | 5,168.7 | |
| June | 411.7 | 848.9 | 2,793 | |
| July | 414.6 | 532.1 | 1,295.7 | |
| August | 343 | 466.1 | 914 | |
| September | 314.4 | 461.7 | 897.8 | |
| October | 299.5 | 379.4 | 433.7 | |
| November | 296.3 | 327.9 | 454.9 | |
| December | 308.9 | 354.7 | 1,288.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Trinity River below Limekiln Gulch near Douglas City, CA normally run highest?
- May, on the long-term record. The median daily flow that month is about 2,001 cfs, against 327.9 cfs in November, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Trinity River below Limekiln Gulch near Douglas City, CA?
- It depends on the month. In January, half of days historically fall near 402.2 cfs, with the middle 80% of days between 322.2 and 1,493.8 cfs. The month-by-month table on this page gives the full range.
- How long has Trinity River below Limekiln Gulch near Douglas City, CA been measured?
- Discharge records at USGS site 11525655 begin in 1981, about 45 years, covering roughly 8,706 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Trinity River below Limekiln Gulch near Douglas City, CA?
- The gauge sits at 40.67261, -122.92055, in California, in hydrologic subbasin 18010211, at an elevation of about 1,665 feet, draining roughly 810 square miles.
- Can I use Trinity River below Limekiln Gulch near Douglas City, CA 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.