MEDIAN FLOW RATE · 30 DAY
0cfs 9.6% vs avg
Optimal band: 2–2 cfs
PERIOD HIGH
14cfs
PERIOD LOW
1cfs
RUNNABLE
22%
last 30 day in band
Precipitation History
Precipitation · YTD
WetWetter than normal
2026 to date
31.8in
+31% vs normal
31.76 in of precipitation so far this year, 31% above the 30-year normal of 24.18 in for this point in the season.
YTD Total
31.8in
This year so far
Normal to Date
24.2in
30-yr average
Typical Range
18.1–32.4in
10th–90th pct YTD
Departure
+31%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 1.73" · normal 2.82" (1.2–4.7)
Feb: 1.41" · normal 2.47" (1.0–3.7)
Mar: 4.71" · normal 3.82" (2.0–6.1)
Apr: 8.07" · normal 4.63" (3.0–6.8)
May: 5.58" · normal 5.09" (2.7–7.6)
Jun: 9.69" · normal 4.31" (2.1–6.3)
Jul: 0.57" (so far)· normal 3.79" (1.3–6.2)
Aug: normal 3.25" (1.5–7.5)
Sep: normal 3.75" (1.6–7.5)
Oct: normal 3.50" (1.6–5.5)
Nov: normal 3.70" (1.6–6.3)
Dec: normal 2.60" (1.4–4.0)
Baseline 1991–2020 · Source: Open-Meteo03:56 PM
Your History · Spanish Lake Trib. nr Black Jack, MO
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Station Location
38.7980, -90.2143Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-07 00:00 UTC
Site #06936530·USGS
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