Middle Thirtymile LTPBR
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Project Overview
Basics
Middle Thirtymile LTPBR
Planning/Design
The project is located on Thirtymile Creek, approximately miles from the 12 miles mouth. Thirtymile is a tributary to the John Day River and the John Day River drains into the Columbia River. It is approximately 6 miles southwest of Condon in Gilliam County. The major watershed issue for this reach is intermittent flow during the summer months. The reaches upstream and downstream have perennial flow and this project aims to extend those wetted reaches. This project will use various floodplain connection actions to create pool habitat and extend perennial flow. Herbicide application and grass seeding are also planned. Project partners include CTWS, ODFW, NRCS, and DSL.
2023
2025
2026
2/18/2025
Project Attributes
Additional Project Attributes
FIP Status
Receiving FIP Funding
Restoration Actions
1. Protect Land and Water (Easement, Acquisition), 16. Beaver Restoration Management, 17. Riparian Fencing, 18. Riparian Buffer Strip, Planting, 3. Pool Development, 9. Restoration of Floodplain Topography and Vegetation
For Land Acquisition and Easement Projects
Project Type
None
Location
Organizations
| Lead Implementer | |
| Partner |
Contacts
Metrics
Expected Metrics
| Number of structures installed | Anchored: Anchored Location: Instream Type of Structure: BDA | 137 |
| Stream miles treated | Treatment Type: instream restoration | 6 linear stream miles |
Reported Metrics
Reported Metrics are not relevant for Projects in the Planning/Design stage.
Financials
Budget
| Comment: | None provided |
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Reported Expenditures
No Expenditures have been reported for this Project.
| Note: | None provided |
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Focal Species
Focal Species
Broad management goals for the Thirtymile Creek watershed are linked to federal recovery planning for Mid-Columbia steelhead listed as threatened under the Endangered Species Act (NWPC 2005). The ecologically distinct Lower John Day steelhead population depend on tributary habitat within Thirtymile Creek for spawning and rearing. Federal recovery planning for Columbia Basin salmonid populations listed under the ESA have specifically listed tributary habitat quantity and quality as a primary factor limiting their population productivity (NMPS 2009).
Implementation and Ecological Results
Implementation and Ecological Results
Proportion (%) of the valley bottom functioning as part of the active channel and active floodplain. Expected to increase resulting from structural intervention due to pond creation, floodplain connectivity, and creation of multi-threaded channels.
• POOL FREQUENCY – Frequency (pools / km) of pools created by bed scour. Expected to increase resulting from the structural treatments. Pool habitat provides refuge for juvenile steelhead during periods of drought and high temperatures, and velocity refuge during high – flow periods.
• BAR FREQUENCY – Frequency (bars / km) of in-channel depositional geomorphic units within the project area. Depositional bars are indicative of spawning habitat used by adult steelhead. Expected to increase resulting from the structural intervention as a function of increased in-channel hydraulic diversity.
• PERCENT VALLEY BOTTOM SURFACE FLOW – Percent of the valley bottom longitudinal length (as measured along the center of the valley bottom) with persistent surface flow during late summer drought periods. Surface flow should be recognized if present in any channel (i.e., primary or non-primary channel). Expected to increase in response to flow attenuation and increased surface – groundwater exchange.
• PERCENT VALLEY BOTTOM RIPARIAN DOMINATE – Proportion of the valley bottom in which the dominate plant community is composed of wetland and/or riparian plant species. Expected to increase with an expanding active channel and floodplain, floodplain inundation frequency, groundwater elevation, as well as due to grazing management and riparian vegetation planting treatments.
DAM ABUNDANCE – Count of beaver dams and artificial dams within the project area. Beaver activity and populations are expected to increase resulting from increased riparian vegetation, and creation of deep-water cover from structural restoration treatments.
Working Groups
Working Groups
LJDWG - Critical Issues
LJDWG - Critical Issues
Project Details
Attachments
FIP Interest Form
- Uploaded On
- 9/12/2024
- File Type
- Word (DOCX)
- Description
No attachments
Budget
- Uploaded On
- 9/12/2024
- File Type
- Excel (XLSX)
- Description
Project Map and Summary
- Uploaded On
- 9/12/2024
- File Type
- Description
Notes
No Notes entered.
External Links
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