Can you swim here today?
Cascade River
Washington · River
Cool water — ease in carefully
As of August 20, 2026, the water temperature at Cascade River is 61°F (16°C), measured by USGS gauge 12182500, 7.1 miles away.
Cool enough to cause cold-water shock on a sudden entry. Get in gradually, let your breathing settle, and keep an eye on weaker swimmers.
Water temp
61°F
16°C
Streamflow
341 ft³/s
discharge
Gage height
11.96 ft
water level
Live, provisional data from USGS gauge CASCADE RIVER AT MARBLEMOUNT, WA (7.1 mi away), as of Aug 20, 4:45 PM 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.