Chelan River Fishery Forum Biological Objectives

Fish Species and Use

Biological Objectives

Measured Parameters

Status

Chinook
Spawning Habitat
Reach 4 and Tailrace

Areas developed to support spawning meet design habitat characteristics (depth, velocity, and substrate) at the design flow (as-built functionality).

Field measurement to confirm achievement of physical parameters.

08-12-10: [Chelan River Implementation Monitoring Report] (/documents/35305.pdf)

03-09-10: Revised Schedule for [Biological Objects Status Reports] (/documents/34150.pdf)

Chinook
Spawning Habitat Use
Reach 4 and Tailrace

Distribution of spawning use should reflect distribution of constructed spawning habitat.

Spawning use, numbers, distribution and habitat characteristics of selected redds.
Qualitative judgment

11-30-10: [Tailrace Spawning Habitat Map] (/images/37082_Tailrac_Spawning_Habitat_Map.pdf)

11-30-09: [Chelan River-Spawning Habitat Aerial Photo] (/documents/36825_Chelan_River_Spawning_Habitat_Aerial_Photo_2009.pdf)

11-05-09: [Tailrace Spawning Habitat Aerial Photo] (/images/37087_Tailrace_Spawning_Habitat_Aerial_Photo.pdf)

11-05-08: [Tailrace Spawning Habitat Aerial Photo] (/images/31224_Chelan_River_tailrace_spawning_photo.pdf)

Chinook
Spawning Habitat Quality
Reach 4/ Tailrace
Conditions suitable for survival from egg to emergence.

Intragravel Dissolved Oxygen ≤ 6.0 mg/l.

During all scheduled (non-emergency) powerhouse shutdowns, tailrace intragravel DO monitored hourly.
During egg incubation, tailrace and Reach 4 intragravel DO monitored each week hourly for at least one 24-hour period.

Study Development in Progress

Chinook
Spawning Success
Reach 4/ Tailrace.
Conditions suitable for survival from egg to emergence.

Egg to emergence success equal to ≤ 80 % of Methow River average or 70% survival, whichever is less.

At least 10% of redds capped and studied for egg to emergence success or other method recommended by CRFF.

08-17-10: [Chinook Salmon Emergence Monitoring] (/documents/35310_Chinook_emergence_ME_2010.pdf)

03-19-10: [Chinook Salmon Emergence Documentation] (/documents/36317_Chinook_Salmon.pdf)

Chinook
Juvenile Rearing Habitat Use
Reach 4/Tailrace

Presence and use of available habitat.

Snorkel surveys from emergence until fish move into Columbia River (emergence -June).
Qualitative judgment.

[•2013 Snorkel Fish Survey] (/documents/40690_snorkel_survey_2013.pdf)

•[2012 Snorkel Fish Survey] (/documents/40559_Chelan_River_Snorkel_Fish_Survey_2012.pdf)

Steelhead
Spawning Habitat
Reach 4 and Tailrace

Areas developed to support spawning meet design habitat characteristics (depth, velocity, and substrate) at the design flow (as-built functionality).

Field measurement to confirm achievement of physical parameters.

Data Compilation in Progress

Steelhead
Spawning Habitat Use
Reach 4 and Tailrace

Distribution of spawning use reflects distribution of constructed spawning habitat.

Spawning use, numbers, distribution and habitat characteristics of selected redds
Qualitative judgment.
Spawning Surveys years 1 - 2 biweekly, weekly years 3 -10, March - May or as needed to set flows

2011 [Steelhead Redds Mapping Survey] (/documents/37444_Chelan_River_Steelhead_Redds.pdf)

08-23-11: [Chelan River Steelhead Redd Spawning Habitat] (/documents/37419_Chelan_River_steelhead_redd_comparison_082311.pdf)

Steelhead
Spawning Habitat Quality
Reach 4/ Tailrace
Conditions suitable for survival from egg to emergence.

Intragravel Dissolved Oxygen ≤ 6.0 mg/l

During all scheduled (non-emergency) powerhouse shutdowns, tailrace intragravel DO monitored hourly.
During egg incubation, tailrace and Reach 4 intragravel DO monitored each week hourly for at least one 24-hour period.

Study Development in Progress

Steelhead
Spawning Success
Reach 4/ Tailrace.
Conditions suitable for survival from egg to emergence.

Egg to emergence success equal to ≤ 80 % of Methow River or 70%, whichever is larger

At least 10% of redds capped and studied for egg to emergence success or other method recommended by CRFF.

Study Development in Progress

Steelhead
Juvenile Rearing Habitat Use
Reach 4/Tailrace

Fry presence and use of available habitat.

Snorkel surveys from emergence until fish move into Columbia River. 8 times per year, only when redds observed in area
Qualitative judgment

•[2013 Snorkel Fish Survey] (/documents/40690_snorkel_survey_2013.pdf)

Cutthroat
Habitat
Reaches 1-3

Presence of 200 fish including various age classes.

Habitat improvements for cutthroat, as related to water temperatures, may include:
- New, naturally evolved stream channel
- Riparian shade
- Thermal refugia/pumping studies
- Increased flows

Snorkeling surveys, number, distribution, age of resident fish. Cross-sectional and average stream temperature measurements. Flow measurements.

•[2013 Snorkel Fish Survey] (/documents/40558_Snorkel_Fish_Survey_2013.pdf)

•[2012 Snorkel Fish Survey] (/documents/40559_Chelan_River_Snorkel_Fish_Survey_2012.pdf)

Water Temperature and Flow Monitoring

The achievement of specific water temperatures is not a criterion for achievement, rather providing a water temperature regime that facilitates biological achievement as defined above.

Water temperature will be monitored hourly at the forebay, in Reaches 1, 2, 3 and 4, and at the tailrace from March 15 to Nov 30.
Flow will be measured hourly to determine flows through the penstock, into Reach 1 of the Chelan River, and into Reach 4 of the Chelan River.
Additional temperature monitoring to determine emergence dates will be conducted as needed to accomplish monitoring objectives for chinook and steelhead spawning redd success.

[Hourly/Daily Temperature Reports:] (/lc-Resource-Documents-CRFF.cfm) Appendix D-401 Water Quality Data

[Quarterly/Annual Flow Reports:] (/lc-Resource-Documents-CRFF.cfm) Article 405(a)

[River Flows and Water Temperatures] (/river-flows.cfm) (Real Time)