USGS Streamgage 11451100
NF Cache C A Hough Spring near Clearlake Oaks, CA
NF Cache C A Hough Spring near Clearlake Oaks, CA is USGS streamgage 11451100 in California, monitoring river discharge in hydrologic subbasin 18020116. It drains a watershed of about 60 square miles. Discharge records at this site go back to 1971. Typical flow runs near 2.2 cfs in July and 68.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 60 sq mi
- Gauge elevation
- 1,537 ft
- Subbasin (HUC-8)
- 18020116
- Coordinates
- 39.16545, -122.61999
- USGS site number
- 11451100
- Records begin
- 1971-10-01 (55 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 55 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 | 8.6 | 95.5 | 818.4 | |
| February | 17.9 | 126.4 | 883.9 | |
| March | 25.1 | 137.5 | 613.5 | |
| April | 17.4 | 68.6 | 265.2 | |
| May | 9.1 | 25.6 | 91.1 | |
| June | 2.5 | 9.2 | 39.2 | |
| July | 0.2 | 2.2 | 11.5 | |
| August | 0 | 0.6 | 4.3 | |
| September | 0 | 0.6 | 3.4 | |
| October | 0.4 | 1.5 | 6.4 | |
| November | 1.5 | 5.8 | 104.9 | |
| December | 3.9 | 32.4 | 487 |
All values in cubic feet per second (cfs).
Common questions
- When does NF Cache C A Hough Spring near Clearlake Oaks, CA normally run highest?
- March, on the long-term record. The median daily flow that month is about 137.5 cfs, against 0.6 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for NF Cache C A Hough Spring near Clearlake Oaks, CA?
- It depends on the month. In January, half of days historically fall near 95.5 cfs, with the middle 80% of days between 8.6 and 818.4 cfs. The month-by-month table on this page gives the full range.
- How long has NF Cache C A Hough Spring near Clearlake Oaks, CA been measured?
- Discharge records at USGS site 11451100 begin in 1971, about 55 years, covering roughly 8,574 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is NF Cache C A Hough Spring near Clearlake Oaks, CA?
- The gauge sits at 39.16545, -122.61999, in California, in hydrologic subbasin 18020116, at an elevation of about 1,537 feet, draining roughly 60 square miles.
- Can I use NF Cache C A Hough Spring near Clearlake Oaks, 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.