MEDIAN FLOW RATE · 1 YEAR
—cfs
No flow data available
Weather Map
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Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
20.7in
≈ normal
20.68 in of precipitation so far this year — about average for this point in the season (normal 22.49 in).
YTD Total
20.7in
This year so far
Normal to Date
22.5in
30-yr average
Typical Range
16.0–29.3in
10th–90th pct YTD
Departure
-8%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 2.08" · normal 3.18" (1.3–5.2)
Feb: 4.27" · normal 3.28" (1.4–5.3)
Mar: 2.14" · normal 3.18" (1.6–5.3)
Apr: 2.11" · normal 3.07" (1.4–5.8)
May: 4.88" · normal 2.69" (1.1–4.8)
Jun: 3.84" · normal 5.08" (2.6–8.0)
Jul: 1.36" (so far)· normal 5.22" (2.8–7.5)
Aug: normal 6.33" (3.2–9.9)
Sep: normal 4.94" (2.4–7.9)
Oct: normal 3.94" (1.1–7.6)
Nov: normal 2.64" (0.9–4.2)
Dec: normal 3.37" (1.4–5.5)
Baseline 1991–2020 · Source: Open-Meteo23:10 UTC
Your History · COOPER RIVER AT U.S. HWY 17 AT CHARLESTON, SC
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Station Location
32.8024, -79.9101Loading map…
DATA · USGS · NOAA · NWS
Site #021720709·USGS
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