MEDIAN FLOW RATE · 30 DAY
53cfs 67.7% vs avg
Optimal band: 54–72 cfs
PERIOD HIGH
158cfs
PERIOD LOW
43cfs
RUNNABLE
35%
last 30 day in band
Precipitation History
Precipitation · YTD
DryDrier than normal
2026 to date
6.9in
-38% vs normal
6.89 in of precipitation so far this year, 38% below the 30-year normal of 11.14 in for this point in the season.
YTD Total
6.9in
This year so far
Normal to Date
11.1in
30-yr average
Typical Range
5.9–14.2in
10th–90th pct YTD
Departure
-38%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 0.62" · normal 0.62" (0.2–1.1)
Feb: 0.22" · normal 0.80" (0.3–1.4)
Mar: 0.77" · normal 1.07" (0.3–2.0)
Apr: 1.82" · normal 2.10" (0.9–3.5)
May: 2.07" · normal 3.09" (1.6–5.0)
Jun: 1.40" (so far)· normal 3.64" (1.6–6.3)
Jul: normal 2.52" (0.9–4.2)
Aug: normal 2.24" (0.9–4.6)
Sep: normal 1.73" (0.6–3.4)
Oct: normal 1.93" (0.6–4.1)
Nov: normal 0.81" (0.1–1.6)
Dec: normal 0.70" (0.1–1.2)
Baseline 1991–2020 · Source: Open-Meteo07:22 PM
Your History · Grand R at Little Eagle, SD
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Weather Conditions
WEATHER CONDITIONS
TODAY
89°
59°
MON
84°
64°
TUE
88°
58°
WED
90°
63°
THU
94°
63°
FRI
92°
61°
SAT
83°
66°
FISH INDEX
Temperature
Too Hot
Wind
Light
Pressure
Stable
Moon Phase
Peak Activity
DAYLIGHT
SUNRISE
04:56 AM
SUNSET
08:36 PM
15H 40M OF DAYLIGHT0H 0M REMAINING
MOON PHASE
Full Moon
98% illuminated
PEAK ACTIVITY
Station Location
45.6578, -100.8183Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-28 20:46 UTC
Site #06357800·USGS
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