Musselshell River at Harlowton MT

Musselshell River MT USGS

Musselshell River at Harlowton MT (06120500) is a real-time streamflow monitoring station on the Musselshell River in MT, operated by the U.S. Geological Survey. Riverbot tracks its streamflow and alerts anglers the moment flow and temperature hit their fishing window. 21 fish species are associated with this station in public fish records.

USGS site number
06120500
Operated by
U.S. Geological Survey
State
MT
Coordinates
46.4288, -109.8412

Live conditions & history

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Fishing regulations

Central District zone default

Default area rules for fish in the public records above. A grey row means the release has no canonical regulation match for that species.

Central District zone default only. Water-specific, national-park, sanctuary, licence, and in-season exceptions may apply.

Effective Jan 1, 2026 – Sep 14, 2027 · evaluated for 2026-09-10 in America/Denver

Regulations shown are for reference only and may not reflect in-season changes. Always verify current regulations with the Montana Fishing Regulations before fishing.

Fish recorded near this station

Sampled in this watershed

Musselshell River at Harlowton MT has documented fish occurrence data from USGS Presence/Absence sampling in the HUC8 watershed 10040201 containing this station. The dataset includes 21 species with recorded observations.

Species include: river carpsucker (Carpiodes carpio), longnose sucker (Catostomus catostomus), white sucker (Catostomus commersonii), mountain sucker (Catostomus platyrhynchus), northern redbelly dace (Chrosomus eos), and 16 others.

Where these records come from

Evidence
Sampled in this watershed
Fish were sampled elsewhere in the same watershed — a provincial or federal survey nearby, not at the gauge itself.
Records
21 species
from 21 individual records
Observed
Nov 14, 2012 – Apr 4, 2017
2 dated records

Sources