USGS Streamgage 11023000
San Diego River A Fashion Valley at San Diego, CA
San Diego River A Fashion Valley at San Diego, CA is USGS streamgage 11023000 in California, monitoring river discharge in hydrologic subbasin 18070304. It drains a watershed of about 429 square miles. Discharge records at this site go back to 1913. Typical flow runs near 1.7 cfs in July and 13.5 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.
View live conditions & forecast →
Gauge details
- State
- California
- Drainage area
- 429 sq mi
- Gauge elevation
- 17 ft
- Subbasin (HUC-8)
- 18070304
- Coordinates
- 32.76505, -117.16863
- USGS site number
- 11023000
- Records begin
- 1913-04-07 (113 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for San Diego River A Fashion Valley at San Diego, CA. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 1.5 | 1.7 | 1.9 | ||
| 1.5 | 1.7 | 1.9 | ||
| 1.4 | 1.7 | 2 | ||
| 1.4 | 1.6 | 2 | ||
| 1.3 | 1.7 | 2.1 | ||
| 1.3 | 1.6 | 2.1 | ||
| 1.3 | 1.6 | 2 | ||
| 1.2 | 1.6 | 2 | ||
| 1.2 | 1.6 | 2.1 | ||
| 1.1 | 1.6 | 2.2 | ||
| 1.1 | 1.6 | 2.2 | ||
| 1.1 | 1.6 | 2.3 | ||
| 1.2 | 1.7 | 2.5 | ||
| 1.2 | 1.6 | 2.4 |
All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.
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 | 6.5 | 17.8 | 197.8 | |
| February | 7.3 | 26.5 | 265.4 | |
| March | 9.2 | 26.2 | 217.2 | |
| April | 5.3 | 13.5 | 87 | |
| May | 2.5 | 6.9 | 30.3 | |
| June | 1.3 | 3.3 | 11.8 | |
| July | 0.7 | 1.7 | 5.7 | |
| August | 0.5 | 1.4 | 3.8 | |
| September | 0.3 | 1.3 | 6.1 | |
| October | 0.7 | 1.9 | 14.8 | |
| November | 1.1 | 5.2 | 55.6 | |
| December | 3.5 | 13.3 | 122.5 |
All values in cubic feet per second (cfs).
Common questions
- When does San Diego River A Fashion Valley at San Diego, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 26.5 cfs, against 1.3 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for San Diego River A Fashion Valley at San Diego, CA?
- It depends on the month. In January, half of days historically fall near 17.8 cfs, with the middle 80% of days between 6.5 and 197.8 cfs. The month-by-month table on this page gives the full range.
- How long has San Diego River A Fashion Valley at San Diego, CA been measured?
- Discharge records at USGS site 11023000 begin in 1913, about 113 years, covering roughly 9,130 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for San Diego River A Fashion Valley at San Diego, CA?
- Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
- Where is San Diego River A Fashion Valley at San Diego, CA?
- The gauge sits at 32.76505, -117.16863, in California, in hydrologic subbasin 18070304, at an elevation of about 17 feet, draining roughly 429 square miles.
- Can I use San Diego River A Fashion Valley at San Diego, 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.