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Environmental Report Castle Creek Hydroelectric Plant

Client: City of Aspen, Utilities Department, Aspen, Colorado

Location: Castle and Maroon Creeks near Aspen, Colorado


This project is ongoing and is scheduled to conclude in late 2010. The project included conducting an R2Cross analysis on Castle Creek, fish population sampling, and boreal toad studies. The objective of the study was to evaluate potential impacts from the proposed Castle Creek hydroelectric plant.

castle_creek_sized
Noteworthy components of the project:
  • Used R2Cross to evaluate the existing minimum flows in Castle Creek.
  • Study included fish population evaluation and boreal toad surveys.
  • The data from the study will be used for the environmental report submitted to FERC for the hydroelectric project.

Reference:

Mr. Phil Overeynder
Utilites Director,
City of Aspen,
Aspen, CO
970-920-5111
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Hydraulic and Habitat Modeling of the Cache La Poudre River Basin

Clients: Water Utilities, City of Fort Collins; Water Department, City of Greeley, Colorado

Location: Cache La Poudre Basin, upstream of Fort Collins, Colorado


Developed a two-dimensional (2-D) hydraulic and habitat modeling study to provide an evaluation of flow-related imacs to rainbow trout, brown trout, longnose sucker and longnose dace at 12 study sites representing over 80 river miles in the Cache La Poudre Basin including the main tributaries, the North Fork Cache La Poudre and South Fork Cache La Poudre.

cache_la_poudre_hydraulic_sized
Noteworthy components of the project:
  • Used state-of-the-art 2-D hydraulic modeling data collection and analysis techniques to evaluate 80 miles of river habitat.
  • Incorporated hydraulic modeling results into a GIS framework to develop habitat-flow relationships.
  • Developed suitability index curves using bivariate statistical analysis with Colorado Division of Wildlife data.
  • Modeled both game and non-game species.
  • Updated older PHABSIM data from the 1980s collected at similar locations.
  • Analyzed the change in habitat as a function of streamflow to determine impacts of flow changes on fish habitat.
  • Study included fish population evaluation and macroinvertebrate analysis.

References:

Mr. Cliff Hoelscher
City of Fort Collins,
Fort Collins, CO
970-222-3026
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Ms. Nancy Koch
City of Greeley,
Greeley, CO
970-371-3742
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Hydraulic and Habitat Modeling of the Colorado River

Client: Bureau of Reclamation, Loveland, Colorado

Location: Colorado River from Windy Gap Dam downstream to Kremling, Colorado


Developed a two-dimensional (2-D) hydraulic and habitat modeling study to provide an evaluation of flow-related impacs to rainbow and brown trout in the Colorado River, near Granby, Colorado. The study consisted of two sites that represented 50 miles of riverine habitat.

colorado_river_hydraulic_model_sized
Noteworthy components of the project:
  • Used state-of-the-art 2-D hydraulic modeling data collection and analysis techniques to evaluate 50 miles of river habitat.
  • Incorporated hyraulic modeling results into a GIS framework to develop habitat-flow relationships.
  • Developed suitability index curves using bivariate statistical analysis with Colorado Division of Wildlife data.
  • Work completed as a Third Party contractor for use in the Windy Gap EIS.
  • Analyzed the change in habitat as a function of streamflow to determine impacts of flow changes on fish habitat.
  • Study included fish population evaluation and macroinvertebrate analysis.

Reference:

Mr. Will Tully
Bureau of Reclamation,
Loveland, Colorado
970-962-4368
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Joe Wright Creek Instream Flow Study

Client: City of Fort Collins Water Utilities, Fort Collins, Colorado

Location: Joe Wright Creek, Colorado


An instream flow study using the instream flow incremental methodology was applied to Joe Wright Creek in Colorado, a headwater tributary of the Cache La Poudre River. The study was conducted to develop minimum flow requirements for U.S. Forest Service special use permits. The study involved site selection, habitat mapping, and habitat time series to determine both with and without project habitat availability information.

joewrightcreek_resized
Noteworthy components of the project:
  • An instream flow study using the instream flow incremental methodology was applied to Joe Wright Creek in Colorado, a headwater tributary of the Cache La Poudre River.
  • The study was conducted to develop minimum flow requirements for U.S. Forest Service special use permits.
  • The study involved site selection, habitat mapping, and habitat time series to determine both with and without project habitat availability information.

 

Reference:

Mr. Dennis Bode
City of Fort Collins, 700 Wood Street Fort Collins, CO 80522
970-221-6672

Hydraulic and Habitat Modeling of the Flathead River

Client: Bonneville Power Administration, Portland, Oregon

Location: Flathead River, Montana


Developed a two-dimensional (2-D) hydraulic and habitat modeling study design to provide an evaluation of flow-related impacts to endangered bull trout and westslope cutthroat trout in the Flathead River upstream of Flathead Lake, Montana.

hyrdraulichabitatflathead sized
Noteworthy components of the project:
  • Utilized state-of-the-art 2-D hydraulic modeling data collection and analysis techniques.
  • Incorporated modeling results into a GIS framework through the use of proprietary software.
  • Use of bivariate habitat suitability analysis.
  • Provided administrators a powerful decision making tool.

References:

Mr. Brian Marotz
Montana Fish, Wildlife and Parks
490 North Meridian
Kalispell, Montana 59901
406-751-4546

Mr. Ron Morinaka
Bonneville Power Administration
P.O. Box 3621
Portland, Oregon
97208
503-230-5365

Yampa River Fish Habitat Use

Client: Colorado River Conservation District, Glenwood Springs, Colorado

Location: Yampa River, Colorado


The objective of this study was to document the habitat use and movement of Colorado pikeminnow in the Yampa River during summer and fall base flow periods. Northern pike and channel catfish habitat use and movement were also documented during this study.

yampa_habitat_photo_resized
Noteworthy components of the project:
  • Documented diel habitat use by Colorado pikeminnow (federally endangered).
  • Surgically implanted radio transmitters in three species of fish (including Colorado pikeminnow).
  • Examined Colorado pikeminnow movement during summer and fall low flows.

Reference:

Mr. Ray Tenney
Colorado River Water Conservation District
P.O. Box 1120
Glenwood Springs, Colorado 81602
970-945-8522

San Juan River Habitat Suitability Study

Client: Southern Ute Indian Tribe, Ignacio, Colorado

Location: San Juan River, Colorado, New Mexico and Utah


A habitat use study was conducted on endangered Colorado pikeminnow in the San Juan River, New Mexico, Colorado and Utah. Adult Colorado pikeminnow were implanted with radio transmitters and followed to obtain intensive habitat use data on a daily basis. The study was conducted during summer peak flow and spawning season to document use of potential spawning areas in the San Juan River.

sanjuanriverhabitatsuitabilitystudy_page_clip_image002_resized
Noteworthy components of the project:
  • First location of potential spawning bars used by Colorado pikeminnow in the San Juan River.
  • Obtained 24-hour habitat use data on radio implanted endangered fish.
  • Study covered a two-year time period and gained information on habitat use mainly in summer but also in fall and winter time periods.

Reference:

Mr. Steve Whiteman
Southern Ute Indian Tribe
P.O. Box 737
Ignacio, Colorado 81137
970-563-0100

Central Platte River Instream Flow Study

Client: Central Platte Natural Resources District

Location: Grand Island, Nebraska


The objective of this study was to determine appropriate approach and implement an instream flow study for 60 miles of Central Platte River from approximately Chapman to Columbus, Nebraska. This study consisted of two phases. Phase 1 was the determination of the appropriate approach. Phase 2 was implementation of the recommended approach to develop instream flow recommendations for the 60 mile study reach.


cpnrd_platte_r_resized
Noteworthy components of the project:
  • Developed the approach to blend with the previous instream flow recommendations conducted in the 1980s and 1990s.
  • Examined several types of instream flow techniques including: one-dimensional Physical Habitat Simulation (PHABSIM), two-dimensional PHABSIM, and a GIS based analytical approach.
  • Implemented the field study of a one-dimensional PHABSIM .
  • Conducted all field sampling within a three-month period.
  • The results of this study confirmed the previous instream flow recommendations, which were an extension from upstream study areas to the Central Platte.

 

Reference:

Mr. Mark Czaplewski
Central Platte Natural Resources District
215 N. Kaufman Avenue
Grand Island, Nebraska
68803
308-385-6282

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