USGS · 11502500

WILLIAMSON RIVER

USGS · 11502500LIVE

WILLIAMSON RIVER BLW SPRAGUE RIVER NR CHILOQUIN,OR

KLAMATH COUNTY, OR42.5644°N, -121.8797°W Updated 16 hr ago

FLOW RATE

531cfs

AIR TEMP

71°F

WIND

3mph NNE

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

531cfs 5.9% vs avg

Optimal band: 498–674 cfs

PERIOD HIGH

1,814cfs

PERIOD LOW

519cfs

RUNNABLE

63%

last 1 year in band

Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

10.1in

-45% vs normal

10.11 in of precipitation so far this year, 45% below the 30-year normal of 18.53 in for this point in the season.

YTD Total

10.1in

This year so far

Normal to Date

18.5in

30-yr average

Typical Range

12.2–24.9in

10th–90th pct YTD

Departure

-45%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.61" · normal 4.65" (1.9–8.8)

Jan

Feb: 3.22" · normal 3.58" (1.4–6.4)

Feb

Mar: 1.28" · normal 3.85" (1.8–6.6)

Mar

Apr: 1.78" · normal 2.76" (1.4–4.1)

Apr

May: 1.92" · normal 2.32" (1.1–4.1)

May

Jun: 0.30" · normal 1.23" (0.3–2.8)

Jun

Jul: 0.01" (so far)· normal 0.50" (0.1–1.2)

Jul

Aug: normal 0.53" (0.0–1.5)

Aug

Sep: normal 0.76" (0.1–2.0)

Sep

Oct: normal 2.08" (0.5–4.1)

Oct

Nov: normal 3.99" (1.5–7.0)

Nov

Dec: normal 5.86" (2.0–10.3)

Dec

Baseline 1991–2020 · Source: Open-Meteo03:04 PM

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Station Location

42.5644, -121.8797

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DATA · USGS · NOAA · NWSUPDATED 2026-07-09 00:00 UTC

Site #11502500·USGS

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