Dual frequency indentification (DIDSON)
Salmonid Research, Monitoring, and Evaluation (RM&E)
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| 12-1631 MR | | Ozette Lake | | 07/01/2012 | | 09/30/2014 | | 2011 | | Completed | | 05/01/2025 | | |
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Description
The Makah Tribe, in coordination with the National Marine Fisheries Service (NMFS), Olympic National Park (ONP), and the Lake Ozette Steering Committee (LOSC), monitored total annual Lake Ozette sockeye salmon abundance and beach spawning abundance and distribution using dual frequency identification sonar (DIDSON). The Tribe previously used a weir on the Ozette River to count sockeye entering Lake Ozette. The weir is channel spanning and acts as a bottleneck to migrating sockeye salmon. When in place, all migrating fish encountering the weir must go through a small viewing chamber where an underwater digital video camera captures time-lapse video. The constrain in migration caused by the weir was identified as contributing to increased exposure time to poor water quality, and predation efficiency of predators and their impacts to adult and juvenile sockeye salmon. There are many years when high May-June river flows prevent placement of the weir, and significant portions of the entering adult run are missed.Modifying sockeye enumeration techniques eliminated weir- related predation impacts by river otters and harbor seals. The counting weir had provided estimates of the total adult abundance entering the lake, but there has been inter-annual variance in the span of operation and counting methods applied
The support for a DIDSON system improved efficiencies and eliminated blockages caused by the weir. The Tribe has produced results and video images docuementing effective utilzation of the DIDSON instrumentation. Use of the DIDSON system replaced the use of a full river-spanning weir to count sockeye entering Lake Ozette lessening predation and improving accuracy.
There were two (2) major beach- spawning areas monitored for sockeye in Lake Ozette; Olsen s Beach and Allen Beach that were monitored with the DIDSON. The DIDSON device was also installed at the Ozette River site at the channel-spanning wier.
Project Benefit
To monitor total annual Lake Ozette sockeye salmon abundance and beach spawning abundance and distribution using dual frequency identification sonar Accomplishments
| Research and Monitoring |
| Stream Miles Monitored |
4.32 |
4.32 |
Funding Details |
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| PCSRF | $104,704 |
| Report Total: | $104,704 |
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Worksites
1-Ozette River
- Worksite Identifier: 1-Ozette River
- Start Date:
- End Date:
Area Description
No Area Description data was found for this worksite.
Location Information
- Basin: Washington Coastal (171001)
- Subbasin:
- Watershed:
- Subwatershed:
- State: Washington
- Recovery Domain: Ozette Lake
- Latitude: 48.15350963
- Longitude: -124.66975699
ESU
- Ozette Lake Sockeye Salmon ESU
Map
Photos
Metrics
Metrics
- E.0
Salmonid Research, Monitoring, and Evaluation (RM&E)Y (Y/N)
- . . E.0.a
RM&E Funding 99,704.00
- . . E.0.b
| Complement habitat restoration project | |
| none |
- . . E.0.c
| Project identified in a plan or watershed assessment. | |
| Lake Ozette Sockeye Recovery Plan |
- . . E.0.d.1
Number of Cooperating Organizations 4
- . . E.0.d.2
| Name Of Cooperating Organizations. | |
| MakahTribe; Olympic National Park,; Nat'l Marine Fisheries Service; Lake Ozette Steering Committee |
- . . E.0.e.1
Number of reports prepared 3
- . . E.0.e.2
| Name Of Report | |
| Lake Ozette Sockeye Limiting Factors Analysis; Makah Tribe's Resource Management Plan |
- . . E.1
MonitoringY (Y/N)
- . . . . E.1.a
Monitoring funding 99,704.00
- . . . . E.1.b.1
Stream Miles Monitored 1.50
- . . . . E.1.b.2
Acres of Watershed Area Monitored 7,787.0
- . . . . E.1.c.1
Adult salmonid population monitoringY (Y/N)
- . . . . . . E.1.c.1.a
# miles (to nearest 0.01 mile) monitored for adult salmonids 1.50
- . . . . E.1.d
| Name Of Comprehensive Monitoring Strategy/Program | |
| Lake Ozette Sockeye Recovery Plan |
2-Lake Ozette
- Worksite Identifier: 2-Lake Ozette
- Start Date:
- End Date:
Area Description
No Area Description data was found for this worksite.
Location Information
- Basin: Washington Coastal (171001)
- Subbasin:
- Watershed:
- Subwatershed:
- State: Washington
- Recovery Domain: Ozette Lake
- Latitude: 48.07999845
- Longitude: -124.62664216
ESU
- Ozette Lake Sockeye Salmon ESU
Map
Photos
Metrics
Metrics
- E.0
Salmonid Research, Monitoring, and Evaluation (RM&E)Y (Y/N)
- . . E.0.a
RM&E Funding 5,000.00
- . . E.0.b
| Complement habitat restoration project | |
| none |
- . . E.0.c
| Project identified in a plan or watershed assessment. | |
| Lake Ozette Sockeye Recovery Plan |
- . . E.0.d.1
Number of Cooperating Organizations 3
- . . E.0.d.2
| Name Of Cooperating Organizations. | |
| Makah Tribe; Olympic National Park, National Marine Fisheries Service, Lake |
- . . E.0.e.1
Number of reports prepared 3
- . . E.0.e.2
| Name Of Report | |
| Lake Ozette Sockeye Limiting Factors Analysis; Makah Tribe's Natural Resource Management Plan |
- . . E.1
MonitoringY (Y/N)
- . . . . E.1.a
Monitoring funding 5,000.00
- . . . . E.1.b.1
Stream Miles Monitored 2.82
- . . . . E.1.b.2
Acres of Watershed Area Monitored 7,787.0
- . . . . E.1.c.1
Adult salmonid population monitoringY (Y/N)
- . . . . . . E.1.c.1.a
# miles (to nearest 0.01 mile) monitored for adult salmonids 2.82
- . . . . E.1.d
| Name Of Comprehensive Monitoring Strategy/Program | |
| Lake Ozette Sockeye Recovery Plan |
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