Can you swim here today?
Joshua Green River
Alaska · River
Cold water — serious cold-shock risk today
Cold waterAs of August 21, 2026, the water temperature at Joshua Green River is 46°F (8°C), measured by USGS gauge 15297610, 16.6 miles away.
Cold water — serious cold-shock risk today: water temperature is 46°F, cold enough to cause cold-water shock on sudden immersion.
- Water temperature is 46°F, cold enough to cause cold-water shock on sudden immersion. — USGS gauge 15297610, as of Aug 21, 10:15 AM gauge-local time
- Flow is below the 25th percentile for Aug 23 (median 257 ft³/s over 35 years). — USGS daily streamflow statistics, as of Aug 21, 10:15 AM gauge-local time
Flow is low for this date — below the 25th percentile for Aug 23 (median 257 ft³/s over 35 years).
No official beach-advisory feed for Alaska yet — follow posted signs and local guidance.
Live, provisional data from USGS gauge RUSSELL C NR COLD BAY AK (16.6 mi away), as of Aug 21, 10:15 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.