MEDIAN FLOW RATE · 30 DAY
532cfs 9.9% vs avg
Optimal band: 456–618 cfs
PERIOD HIGH
577cfs
PERIOD LOW
519cfs
RUNNABLE
100%
last 30 day in band
Precipitation History
Precipitation · YTD
DryDrier 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)
Feb: 3.22" · normal 3.58" (1.4–6.4)
Mar: 1.28" · normal 3.85" (1.8–6.6)
Apr: 1.78" · normal 2.76" (1.4–4.1)
May: 1.92" · normal 2.32" (1.1–4.1)
Jun: 0.30" · normal 1.23" (0.3–2.8)
Jul: 0.01" (so far)· normal 0.50" (0.1–1.2)
Aug: normal 0.53" (0.0–1.5)
Sep: normal 0.76" (0.1–2.0)
Oct: normal 2.08" (0.5–4.1)
Nov: normal 3.99" (1.5–7.0)
Dec: normal 5.86" (2.0–10.3)
Baseline 1991–2020 · Source: Open-Meteo03:04 PM
Your History · WILLIAMSON RIVER BLW SPRAGUE RIVER NR CHILOQUIN,OR
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Station Location
42.5644, -121.8797Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-09 00:00 UTC
Site #11502500·USGS
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