1. The Coquille River Tidegate Inventory By: the Coquille watershed Association
Project funded by: Wild Rivers Coastal Alliance
Oregon Watershed Enhancement Board

3. Types Of Watershed Restoration Projects We Do:
Riparian Restoration
Native trees & shrubs planting
Invasive weed reduction
Watershed Restoration Projects/Working Lands Improvement
Livestock-exclusion fencing
Off-channel water systems
Sediment Reductions
Erosion Control
Road Decommissioning
Improved heavy use areas
Passage/Barrier Improvement
Culverts
Tidegates
Instream Structures
Large wood placement
Rock weirs
Spawning gravels
Off-Channel Habitat
Side channels
Pools & Alcoves
These actions will benefit not only fish, but all plants and animals and help to restore local eco-systems of working landscapes and diversity in fish runs, which will hopefully lead to eventual de-listing and greater recreational of commercial fishing opportunities

4. tidegates systems in the Coquille watershed

5. 2013-2014 Tidegate & permitting assistance becomes hot topic
2014 The CWA meets with the WRCA and discusses the need for an inventory to convey the need to address failing infrastructure as well as try to find a way to assist landowners with working landscape issues such as permitting
Funding was approved for the CWA to locate as many structures as possible
Survey work was completed in 2015 with 114 structures
2015- current The Nature Conservancy also received funding to from WRCA to work with the CWA and convert finding to useful information including a prioritization list

6. The Coquille Tidegate/Water Control Structure Inventory
Project Purpose:
1)The project produced a comprehensive survey of tidegates in the Coquille River system.
2)The project will also increase community awareness about tidegates, landowner outreach could possibly lead to riparian and/or large wood projects once landowners are aware of options for restoration and the enhancement of their properties and working landscapes.
*We will be able to work with partners to prioritize the structures
*Use data to appeal to and secure funders for on-the-ground restoration projects.
*Further research and provide data on how lower wetland and tidally-influenced areas with brackish waters are a key migration tool for developing and over- wintering fry/salmonids to acclimate from fresh water to the ocean, and improving that habitat by replacing failing/non-functioning tidegates and culverts with fish-friendly tidegates will lead to healthier and more abundant fish populations.

7. Process Overview:
*Preliminary Research & Preparation- search for and review existing tidegate information, tax lot owner info etc.
*Inventory & Assessment- Survey approximately 37.5 miles of river by boat. Contact landowners and survey by land.
*Inventory Report- Compile collected data, meet with partners for assessment, feasibility and assist with priority rankings.
*Project Development- Begin developing outreach and projects with willing landowners.

8. Preliminary Research & Preparation
Mattison tidegate study 2011
Approximately 36 listed tidegate.
ODFW fish barrier layer
OFPB_NHD_Publication gdb
Review of tax lot layers along waterways
Coos County/Assessors /Map Information/GIS Parcel Interactive web map
Review of GIS mapping and crossing points.
Arc GIS map imagery-CWA
Google Earth

9. Mattison GPS points converted to GIS map

11. Inventory results
114 structures found along the 37 miles of river as well as on private land where permission was granted.
59 (52%) were 2 feet or less
32 (28%) were 2-5 feet
10 (9%) were 6-8 feet
5 (7%) were 6 feet or larger
4 (4%) were unknown
Observations indicated:
28 (25%) Considered fully functioning for working landscape needs
11 (10%) Considered partially functioning with leaks
12 (11%) Considered not in functioning condition
63 (56%) unknown condition-not able to verify or not permission to access
Fish passage % by ODFW standards is unknown at this time, some are on the ODFW barrier list.

12. Example site 13:. will show various data collected
Example site 13: *will show various data collected *pictures and site description/observation *Example of possible habitat improvements With the help of TNC priority ranking process we will have additional data of how the project ranks overall, potential acres of habitat behind the gate, potential data for conceptual project cost estimate.

13. Tidegate Primary Secondary or crossing
Lat & Long
Approx. River Mile
Survey method
Tidegate Primary Secondary or crossing
Size ft.
Type
Condition
Notes
Crossing Type
Water depth at upstream/ inlet
Upstream structure
1st ACW at upstream widthx10
2nd ACW at 20' above first
3rd ACW at 20' above second
Water depth at down stream/ outlet
Downstream structure
1st ACW at down stream widthx10
2nd ACW at 20' below first
3rd ACW at 20' below second
Channel Name
ODFW identified presence?
ODFW identified tidegate as barrier?
distance/ type to next barrier
Potential habitat in all tris to next barriers 9
16.8
Boat
Primary 3
metal- top hinge
Appears working- currently closed- possibly leaking
Unknown brand
Round- CMP
Appears good at tidegate. No acess to inside
Tidal
Rivers Edge No 10
17.8
Boat & Land
6x6
Metal hangers-wooden flaps
Appear to be maintained and working
Unknown brand, possibly leaks
concrete- square 50
Appears clear and functioning- No acess to inside 5 30 60
Assumed
unknown
3.77
10B
same 11
18.65
4x4
Wooden flap w/ pet door
Out of alignment- leaking
Home made- gate on each end of pipe
concrete/ corrigatede- round 4
**Appears to be concrete on one end and corrigates on the other.
3.75
Chained partially open-petdoor broke- leaking
homemade 12
20.3 13
14.99
top hinge-Aluminum
Rectangle gate on round culvert structure
CMP-round 8
Appears clear and functioning- crossing is stable and retaining wall good 2
11.5
14.2
13.8
10.8 20
Hatchet Slough
yes
4.6 miles 14
14.4
Wood & rubber mat with manual lift
Unknown brand. Currently closed with manual control
Plastic- round
8.5
Seestrom Creek
2009 feet Road culvert-unknown passage condition
2.09 miles 15
13.5
2x4
Wood hanging by rope
Homemade
Galvinized-round
Eroded with retaining wall on both sides
5.5 6
Alder Creek
2,227 feet Road culvert-passable
2.02 miles 16
13.45
Top Hinge- Steel, CALCO
Intact but ajar with debris
Manual oporation- Concrete basin & footings
Appears clear and functioning- crossing is stable
Unknown
3.25
Unnammed trib
1553 feet Road Culvert-unknown
0.75 miles

14. #13 river mile 14. 4 is a primary tidegate/water control structure
#13 river mile 14.4 is a primary tidegate/water control structure. Tidegate appears to be functional, possible minor leaking. While considered functional to the landowner this could be considered a full fish barrier depending on operation management. Based on GIS map and ODF fish layer improvement to operation management or replacement with fish friendlier gate could improve fish access to approximately 4.6 miles of habitat.

15. ODFW Current and historical fish habitat indicated by yellow line behind barrier 13. Measured out to Approximately 4 miles of potential improved habitat access.

16. 2,508Ac (3.9 sq. miles) of watershed
Site 13 (Hatchet Slough)
2,508Ac (3.9 sq. miles) of watershed
4 miles of coho habitat per ODFW layer
18.7 miles of stream network
34.7 ac of inundation area
1 know barrier at this time (tidegate)

17. Various Pictures of Structures

20. Biggest Project Challenges
Landowner may not be open to Federal, State or other regulatory agency involvement
Project funding
Lack of project development funds
Funding match sources
Funding timelines (1 or 2 yrs.)
Permitting
Complexity of information required
length of time to process
Associated use restrictions or requirements

21. Next Steps: *Continue Working with TNC staff to use data to complete prioritization *continue Working with ODFW to assist with prioritization *Continue landowner and agencies project development (3 in process) *continue to Seek and obtain funding *continue to Work with permitting agencies to streamline permitting process under certain conditions (PROGRAMATIC) *Improve project implementation timelines to meet working landscape needs *Share what we have learned with others