
Dick Creek, a second-order
tributary, flows 9 miles in a southwesterly direction, discharging an estimated base flow
of 8 to 12 cfs into Monture Creek at river mile 4.0. This stream flows through
low-relief moraines and flat sedge meadows. It is basin fed in the upper reaches, but
goes intermittent in middle reaches from loss of water to alluvium and irrigation. In
lower reaches, Dick Creek is spring fed and perennial.
Fish populations in Dick Creek were
impaired by dewatering, obstructions to passage, channel dredging and losses to irrigation
canals. Riparian grazing and a streamside feedlot also affected habitat. A 1.5
mile section of stream had been dredged and mechanically widened to 20 feet; a remnant
channel indicates the width of the original channel averaged five feet. This section was a
poor rearing environment, extremely shallow and wide, had elevated temperatures, and a
formidable path for migrating bull trout and westslope cutthroat trout. Irrigation
and grazing practices have further altered habitat, restricting passage of fish into
tributaries of Dick Creek. In order to prioritize restoration resources, we developed a
fisheries-based restoration priority scorecard, based on biological, social and financial
considerations, for 83 impaired tributaries of the Blackfoot River. Dick Creek ranked 5 of
83 streams surveyed.

Before restoration. |

During restoration. |
Restoration
of Dick Creek began in 1992 with reconstruction of the dredged channel using three methods
including:
- Construction of a new channel
- Restoration of old meanders
- Narrowing of some dredged sections
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After restoration. |
The restored E6 channel was constructed
to conform with historic channel dimensions taken from a reference reach. Restoration
of the Dick Creek Channel resulted in an increase of 6,050 feet of channel
length. Further improvements to fish habitat included the reestablishment of natural
clay bottoms, deepening and narrowing the channel configuration to fit a E6 channel type,
adding woody debris, and creating overhanging banks.
Additional projects completed in the
drainage include; restoration of several wetland basins (some of which were designed to
filter livestock run-off); removing a feedlot from the streambanks, removing three fish
passage barriers at irrigation diversions, hardening stream crossings used by livestock,
removing a failing stream crossing structure made of logs and earth; developing several
off-site water sources for livestock use; constructing several miles of fence to improve
livestock management along Dick Creek and adjacent wetlands; and perpetual protection to
over 3,000 acres through Conservation Easements.
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