Grand River — Sumner, Mo Fishing Conditions
Updated 42 minutes ago · 4 attached data sensors
An active weather alert matters more than the fishing score
Check the active National Weather Service alert before deciding whether to go. The derived fishing score should not override official safety information.
Current streamflow is 2,950 cfs. Flow is rising by about 447% over 24 hours.
Wind should be relatively manageable for most fishing logistics.
This reading becomes biologically useful only when paired with a species that is actually confirmed for this water. The site no longer turns temperature compatibility into an unverified species claim.
- No authoritative species evidence is attached yet, so this page deliberately does not recommend specific fish species.
- No qualified multi-year monthly flow baseline is available yet, so the current flow cannot be labeled high or low for the season.
Current score drivers
- Streamflow is up 447% versus roughly 24 hours ago.
- Current wind is about 5 mph.
- Current precipitation probability is 45%.
- An active NWS alert is reducing the planning score.
Best planning windows
light wind · low rain risk · active weather alert
6 mph wind · 4% rainlight wind · low rain risk · near dawn/dusk · active weather alert
5 mph wind · 1% rainlight wind · low rain risk · near dawn/dusk · active weather alert
3 mph wind · 2% rainThese rank weather/light/tide logistics only. They are not bite forecasts.
Weather-based trip planning
Future scores primarily reflect forecast weather while using today's water conditions as the baseline. Recheck before the trip because river flow, tides and water temperature can change.
Confirmed fish targets
No authoritative species occurrence evidence is attached to this water yet, so the site deliberately does not recommend trout, bass or any other target merely because the temperature looks compatible.
Species recommendations require stored authoritative/editor-confirmed occurrence evidence. Broad temperature compatibility is not enough.
Useful starting points
Wading staff
Flow has changed materially; conservative footing and access checks matter more.
See options on Amazon →Multi-weight jig assortment
Multiple weights let you adjust to current speed and depth.
See options on Amazon →As an Amazon Associate I earn from qualifying purchases.
Where this page gets its facts
- USGS: Grand River Near Sumner, Mo (sensor ID 06902000)
- USGS: Grand River Below Sumner, Mo (auxiliary Gage) (sensor ID 06902100)
- USGS: Grand River Near Fountain Grove, Mo (sensor ID 06900800)
- USGS: Grand River At Chillicothe, Mo (sensor ID 06899680)
Water data: U.S. Geological Survey (USGS). Weather forecasts/alerts: National Weather Service (NWS). Coastal tide/observation data: NOAA CO-OPS where applicable. Derived scores are site calculations, not official agency products.
Verify before you fish
Licensing and exemptions vary.
USFWS license finder →Seasons, limits and special reaches can change.
Verify official rules →A sensor coordinate is not proof of legal public access.
Check location/access context →Nearby data-backed waters
Missouri River — Waverly, Mo
42 miles away · Excellent
Missouri River — Boonville, Mo
50 miles away · Excellent
Missouri River — Kansas City, Mo
76 miles away · Good
Missouri River — St. Joseph, Mo
80 miles away · Fair
Missouri River — Jefferson City, Mo
98 miles away · Good
Osage River — Warsaw, Mo
99 miles away · Fair
What this score means
This is a planning score based on measurable conditions. It is not a bite forecast and cannot guarantee catches. Missing facts are left unavailable rather than invented.