ST. JOSEPH RIVER AT MOTTVILLE, MI
ST. JOSEPH RIVER MI USGS
ST. JOSEPH RIVER AT MOTTVILLE, MI (04099000) is a real-time streamflow monitoring station on the ST. JOSEPH RIVER in MI, operated by the U.S. Geological Survey. Riverbot tracks its streamflow and publishes a 7-day flow forecast so anglers know when conditions line up. 16 fish species are associated with this station in public fish records.
- USGS site number
- 04099000
- Operated by
- U.S. Geological Survey
- State
- MI
- Coordinates
- 41.8009, -85.7561
Live conditions & history
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7-day weather
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Fishing regulations
MI state-wide default defaultDefault area rules for fish in the public records above. A grey row means the release has no canonical regulation match for that species.
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Northern Pike Open · Harvest allowed within limits Open all year Details
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Open all year
- Daily limit
- 2
- Size rule
- 24"
Official rule · retrieved Aug 2, 2026
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Yellow Perch Open · Harvest allowed within limits Open all year Details
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Open all year
- Daily limit
- 25
Official rule · retrieved Aug 2, 2026
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Blackside Darter No season data
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Bluegill No season data
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Bluntnose Minnow No season data
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Brown Trout No season data
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Central Mudminnow No season data
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Common Logperch No season data
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Green Sunfish No season data
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Johnny Darter No season data
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Largemouth Bass No season data
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Mottled Sculpin No season data
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Northern Hog Sucker No season data
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Smallmouth Bass No season data
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Spotfin Shiner No season data
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Spotted Sucker No season data
Effective Jan 1, 2026 – Sep 14, 2027 · evaluated for 2026-09-11 in America/Detroit
Regulations shown are for reference only and may not reflect in-season changes. Always verify current regulations with the Michigan Fishing Regulations before fishing.
Fish recorded near this station
Community observations nearbySt. Joseph River At Mottville, Mi has 16 fish species documented via iNaturalist research-grade observations within 10 km. These community-sourced records indicate fish presence in the vicinity.
Species include: Mottled Sculpin (Cottus bairdii), Spotfin Shiner (Cyprinella spiloptera), Northern Pike (Esox lucius), Johnny Darter (Etheostoma nigrum), Northern Hog Sucker (Hypentelium nigricans), and 11 others.
- Mottled Sculpin Cottus bairdii
- Spotfin Shiner Cyprinella spiloptera
- Northern Pike Esox lucius
- Johnny Darter Etheostoma nigrum
- Northern Hog Sucker Hypentelium nigricans
- Green Sunfish Lepomis cyanellus
- Bluegill Lepomis macrochirus
- Smallmouth Bass Micropterus dolomieu
- Largemouth Bass Micropterus nigricans
- Spotted Sucker Minytrema melanops
- Yellow Perch Perca flavescens
- Common Logperch Percina caprodes
- Blackside Darter Percina maculata
- Bluntnose Minnow Pimephales notatus
- Brown Trout Salmo trutta
- Central Mudminnow Umbra limi
Where these records come from
- Evidence
- Community observations nearby
- Research-grade community observations (iNaturalist) recorded near this station, not a formal survey.
- Records
- 16 species
- from 20 individual records
- Observed
- May 23, 2018 – Apr 28, 2026
- 20 dated records
Sources
- iNaturalist research-grade fish observations — 20 records
🪰 Hatch Calendar
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A month-by-month hatch calendar for this river — which insects are emerging now, hook sizes, and patterns to fish — collected from fly shops and guides who know it.