GRASS RIVER AT CHASE MILLS NY
GRASS RIVER NY USGS
GRASS RIVER AT CHASE MILLS NY (04265432) is a real-time streamflow monitoring station on the GRASS RIVER in NY, operated by the U.S. Geological Survey. Riverbot tracks its streamflow and alerts anglers the moment flow and temperature hit their fishing window. 20 fish species are associated with this station in public fish records.
- USGS site number
- 04265432
- Operated by
- U.S. Geological Survey
- State
- NY
- Coordinates
- 44.8465, -75.0784
Live conditions & history
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Fishing regulations
NY 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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American Eel Open · Harvest allowed within limits Jan 1 – Dec 31 Details
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Jan 1 – Dec 31
- Daily limit
- 25
- Size rule
- 9"
- Notes
- Statewide baseline (applies where no special regulation)
Official rule · retrieved Aug 2, 2026
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Muskellunge Open · Harvest allowed within limits Jun 1 – Nov 30 Details
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Jun 1 – Nov 30
- Daily limit
- 1
- Size rule
- 40"
- Notes
- Statewide baseline (applies where no special regulation)
Official rule · retrieved Aug 2, 2026
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Northern Pike Open · Harvest allowed within limits May 1 – Mar 15 Details
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May 1 – Mar 15
- Daily limit
- 5
- Size rule
- 18"
- Notes
- Statewide baseline (applies where no special regulation)
Official rule · retrieved Aug 2, 2026
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Walleye Open · Harvest allowed within limits May 1 – Mar 15 Details
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May 1 – Mar 15
- Daily limit
- 5
- Size rule
- 15"
- Notes
- Statewide baseline (applies where no special regulation)
Official rule · retrieved Aug 2, 2026
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Yellow Perch Open · Harvest allowed within limits Jan 1 – Dec 31 Details
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Jan 1 – Dec 31
- Daily limit
- 50
- Notes
- Statewide baseline (applies where no special regulation)
Official rule · retrieved Aug 2, 2026
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Brown Bullhead No season data
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Central Mudminnow No season data
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Channel Darter No season data
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Fallfish No season data
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Golden Shiner No season data
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Logperch No season data
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Mimic Shiner No season data
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Pumpkinseed No season data
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Rock Bass No season data
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Rosyface Shiner No season data
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Shorthead Redhorse No season data
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Silver Redhorse 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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White Sucker No season data
Effective Jan 1, 2026 – Sep 14, 2027 · evaluated for 2026-09-11 in America/New_York
Regulations shown are for reference only and may not reflect in-season changes. Always verify current regulations with the New York Freshwater Fishing Regulations before fishing.
Fish recorded near this station
Sampled at this station's reachGrass River At Chase Mills NY has documented fish occurrence data from USGS Presence/Absence sampling at this monitoring station's reach (COMID 15476223). The dataset includes 20 species with recorded observations.
Species include: rock bass (Ambloplites rupestris), brown bullhead (Ameiurus nebulosus), american eel (Anguilla rostrata), white sucker (Catostomus commersonii), spotfin shiner (Cyprinella spiloptera), and 15 others.
- Rock Bass Ambloplites rupestris
- Brown Bullhead Ameiurus nebulosus
- American Eel Anguilla rostrata
- White Sucker Catostomus commersonii
- Spotfin Shiner Cyprinella spiloptera
- Northern Pike Esox lucius
- Muskellunge Esox masquinongy
- Pumpkinseed Lepomis gibbosus
- Smallmouth Bass Micropterus dolomieu
- Silver Redhorse Moxostoma anisurum
- Shorthead Redhorse Moxostoma macrolepidotum
- Golden Shiner Notemigonus crysoleucas
- Rosyface Shiner Notropis rubellus
- Mimic Shiner Notropis volucellus
- Yellow Perch Perca flavescens
- Logperch Percina caprodes
- Channel Darter Percina copelandi
- Walleye Sander vitreus
- Fallfish Semotilus corporalis
- Central Mudminnow Umbra limi
Where these records come from
- Evidence
- Sampled at this station's reach
- Fish were sampled directly on the river reach this gauge sits on, so these species were recorded at this spot rather than inferred.
- Records
- 20 species
- from 20 individual records
- Observed
- Jun 22, 1998 – Jun 22, 1998
- 20 dated records