Can you swim here today?
South Fork Greenhorn Creek
California · River
Use caution — flow is well above normal for this date
Use cautionAs of August 22, 2026, USGS gauge 11418500, 19.5 miles away, reports a streamflow of 41 ft³/s near South Fork Greenhorn Creek but no water-temperature reading.
Use caution — flow is well above normal for this date: live streamflow is available but no water-temperature sensor is nearby.
- Live streamflow is available but no water-temperature sensor is nearby. — USGS gauge 11418500, as of Aug 22, 3:00 AM gauge-local time
- Flow is above the 75th percentile for Aug 22 (median 4 ft³/s over 90 years); fast water is the top river-drowning risk. — USGS daily streamflow statistics, as of Aug 22, 3:00 AM gauge-local time
- No official beach advisory posted (California Water Boards — FHAB Reports checked).
Flow is high for this date — above the 75th percentile for Aug 22 (median 4 ft³/s over 90 years).
Official advisories
Checked against California Water Boards — FHAB Reports — no advisory posted.
Live, provisional data from USGS gauge DEER C NR SMARTSVILLE CA (19.5 mi away), as of Aug 22, 3:00 AM gauge-local time.
Before you get in
- Never swim alone — and keep weaker swimmers within arm's reach.
- Scout depth and entry/exit points before you get in.
- Read the current: avoid fast, rising, or murky water.
- Check the forecast — get out well before storms or lightning.
- Obey posted signs, flags, and lifeguard guidance.
Read next
Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.