Updated
Illinois River
River · Agness, Oregon
Comfortable for a swim today
Good to swimComfortable for a swim today: water temperature is 74°F, within the comfortable 70–86°F range.
- Water temperature is 74°F, within the comfortable 70–86°F range.
- Flow is below the 25th percentile for Aug 22 (median 214 ft³/s over 22 years).
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Comfortable for a swim today
Good to swimComfortable for a swim today: water temperature is 74°F, within the comfortable 70–86°F range.
- Water temperature is 74°F, within the comfortable 70–86°F range. — USGS gauge 14378200, as of Aug 21, 7:45 PM gauge-local time
- Flow is below the 25th percentile for Aug 22 (median 214 ft³/s over 22 years). — USGS daily streamflow statistics, as of Aug 21, 7:45 PM gauge-local time
Flow is low for this date — below the 25th percentile for Aug 22 (median 214 ft³/s over 22 years).
No official beach-advisory feed for Oregon yet — follow posted signs and local guidance.
Live, provisional data from USGS gauge ILLINOIS RIVER NEAR AGNESS, OR (0.8 mi away), as of Aug 21, 7:45 PM gauge-local time.
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Frequently asked questions
- Where is Illinois River?
- Illinois River is a river in Agness, Oregon.
- What is the water temperature at Illinois River?
- As of August 21, 2026, the water temperature at Illinois River in Agness, Oregon is 74°F (24°C), measured by USGS gauge 14378200, 0.8 miles away.
- Can you swim at Illinois River?
- Comfortable for a swim today: water temperature is 74°F, within the comfortable 70–86°F range. Checked August 21, 2026.
- How is Illinois River rated?
- Illinois River in Agness, Oregon has an average visitor rating of 4.7 out of 5, based on 19 reviews.
- What amenities does Illinois River have?
- Visitor-listed amenities at Illinois River include camping-nearby.
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Best Times to Visit
- ›Check water levels and current conditions before visiting
- ›Wear life jackets when on the water
- ›Be aware of rapids and potential hazards
- ›Respect private property along riverbanks
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