ANDERSON RIVER PARK SIDE CHANNEL HABITAT RESTORATION PROJECT. Public Outreach Meeting June 5, 2017

Transcription

1 ANDERSON RIVER PARK SIDE CHANNEL HABITAT RESTORATION PROJECT Public Outreach Meeting June 5, 2017

2 Welcome and Introductions

3 Providing Feedback Anderson River Park is an important part of the community and your input means a great deal to us. Discussion after presentation. Opportunity for written comments. Visit: to provide feedback online Contact us any time. Harmony Gugino Project Manager harmony@westernshastarcd.org, Jan Raether Project Coordinator jraether@westernshastarcd.org,

4 Agenda CVPIA Program Status of Shasta County Projects Guiding Principles for Planning Anderson River Park Side Channel Project Why Anderson River Park? Planning and Design Test Pit Activity Next Steps Feedback/Discussion

5 CVPIA Program - Overview Central Valley Project (CVP) is one of the world s largest water storage and conveyance systems and provides water supply to most of California. Central Valley Project Improvement Act (CVPIA) includes responsibility to establish programs for fish and wildlife restoration. Anadromous Fish Restoration Program (AFRP) focuses on restoration actions for salmon species in the Central Valley and Trinity River basins of California. CVPIA (b)(13) Spawning and Rearing Habitat Restoration Program focuses on the Stanislaus River, American River, and upper Sacramento River from Keswick Dam to former Red Bluff Diversion Dam.

6 Historically, endangered winter-run spawn in the uppermost reaches of the Sacramento River watershed. Dams cut off access to historic spawning and rearing areas and reduce watershed complexity. Complexity promotes salmon growth. Growth promotes survival. Historic Range for Salmon Runs Current Range for Salmon Runs

7 Status of Shasta County Projects Keswick Dam Gravel Market Street Gravel Painter s Riffle Channel/Gravel North Cypress Channel South Cypress Channel North Tobiasson Rearing Structures Shea Island Channel/Gravel Kapusta Side Channel Green = Completed Orange = In Progress Yellow = Planning Anderson River Park Channel

8 Guiding Principles for Planning Maximize benefit to endangered/ threatened salmonids Minimize disturbance/impacts Other benefits, where possible North Cypress Side Channel Project Example

9 Overhanging Vegetation Low Velocity, Ideal Depth Large Woody Debris

10 Guiding Principles for Planning Maximize benefit to endangered/ threatened salmonids Minimize disturbance/impacts Other benefits, where possible

11 Maintained Vegetation New Native Plantings Followed Path of Least Resistance

12 Guiding Principles for Planning Maximize benefit to endangered/threatened salmonids Minimize disturbance/impacts Additional benefits, where possible

13 Clean-up & impede encampments Invasive species removal & improve access

14 Why Anderson River Park? Maximize benefit to endangered /threatened salmonids Working from north to south Upper 30% of the channel is disconnected. Well established riparian area. High-risk fish stranding site.

15 Years of Change 9/9/1998: 12,000 CFS 8/27/2013: 10,000 CFS Channel is clearly visible Channel is filled in

16 Stranding Locations During high flows, juvenile salmon are stranded in low-lying areas

17 Why Anderson River Park? Minimize disturbance/impacts Existing use for recreation and natural area are complementary land use.

18 Source: Record Searchlight Source: Record Searchlight Source: Shastadogs.com Source: Safe Haven Rescue Journal

19 Why Anderson River Park? Additional benefits Invasive species removal Potential reduction in stagnant backwaters conducive to mosquito reproduction Mapped trails/signage for public and emergency service

20 Number of mosquito larval treatments (2008-present)

21 Potential to create detailed trail map this map includes administrative, horse, and walking trails

22 Planning and Design Site recommendations Programmatic environmental assessment TAC review Site-specific resource surveys TAC review/land manager input Evaluate impacts (beneficial, negative) Test pit permits/approvals Outreach #1 Project permits/approvals Site recommendations Site inspections Conceptual design alternatives Engineering surveys 30% design/modeling (maximum habitat) 60% design/modeling Test pits 90% Design Construction

23 deeper low-lying areas + connection to backwaters + max suitable depth and velocity + large woody debris = 6 acres new juvenile rearing habitat

24 Test Pit Activity Purpose Predict amount of excavated material for channel construction Logistics Up to 9 pits (~2 w X 10 l X 10 d) Material piled next to pit using backhoe, replaced when completed Representative sample bagged, and tested offsite Up to two days beginning mid-july* Access along existing roads, trails and paths. Biological Monitors on site throughout excavation Impacts Noise during operation Minor temporary disturbance to soil and ground vegetation. *Permit allowing

25 Test Pit Locations

26 Test Pit Locations

27 Test Pit #1 Location: western side channel Vegetation: none WOUS: cobble/gravel riverine

28 Test Pit #2 Location: western side channel Vegetation: grasses WOUS: vegetated riverine

29 Test Pit #3 Location: adjacent to central side channel Vegetation: grasses WOUS: vegetated riverine

30 Test Pit #4 Location: central side channel Vegetation: grasses, willow WOUS: palustrine emergent persistent

31 Test Pit #5 Location: central side channel Vegetation: grasses WOUS: palustrine emergent persistent

32 Test Pit #6 Location: central side channel Vegetation: grasses WOUS: palustrine emergent persistent

33 Test Pit #7 Location: eastern side channel Vegetation: none WOUS: cobble/gravel riverine

34 Test Pit #8 Location: adjacent to eastern side channel Vegetation: grasses WOUS: cobble/gravel riverine

35 Test Pit #9 Location: eastern side channel Vegetation: grasses WOUS: palustrine emergent persistent

36 Next Steps Test Pit Excavation 90% Side Channel Design Access Mosquito/Vector Benefits Targeting stranding locations Outreach Meeting #2 (Late Summer) Side Channel Permits and Approvals Contractor Bids Construction (phases)

37 Thank you for your time. Questions? To provide feedback online visit:

38 Depth and Access

39 4,000 CFS (Minimal Flows) Post-Construction Conditions Channels are designed to be ~1.5 feet deep at these minimal allowable flows Pre-Construction Conditions Relatively dry access to all areas of the park

40 6,000 CFS (Typical Winter Flows) Post-Construction Conditions Channels are designed to be ~3 feet deep at these typical winter flows Pre-Construction Conditions Relatively dry access to all areas of the park

41 13,000 CFS (Typical Summer Flows) Post-Construction Conditions Channels are designed to be ~5 feet deep at these typical summer flows Pre-Construction Conditions The Island is almost entirely inaccessible without getting wet

42 Standard Channel Depth Cross Section: A 30 ft width Bank full Depth: 10ft 13,000 CFS Depth: 6ft 6,000 CFS Depth: 4ft 4,000 CFS Depth: 2ft The standard channel would have approximately 3:1 slopes, and be at least two feet deep at minimal flows to provide optimal fish habitat at reduced flows. Typical Summer Flows: 11,500 cfs Typical Winter Flows: 4,000 cfs

43 Shallow Water Crossings Cross Section: B 60 ft width Bank full Depth: 6ft 13,000 CFS Depth: 4ft 6,000 CFS Depth: 2ft 4,000 CFS Depth: 1ft In order to provide shallower depths, the shallow water crossings would be wider than other locations in the channel. This helps to maintain velocity and allows us to maintain suitable habitat above and below crossings. Typical Summer Flows: 11,500 cfs Typical Winter Flows: 4,000 cfs

44 Standard Channel Depth: 10 ft Minimum: 2 ft Cross Section: A Cross Section: B Standard Shallow Crossing Depth: 2-4 ft Minimum: 1 ft

45 Dry* Crossing at 14,000 CFS Dry* Crossing at 14,000 CFS Periodically Dry Crossing Dry Crossings indicate that you are likely to be stepping on rocks, or up to shin deep in standing, or slowly moving water. Periodically dry crossings indicate that these areas may be dry crossings at the lowest flows, but typically the water is too deep to cross Consistently Wetted Channel The consistently wetted channel is wet at all flows, and crossing without getting wet would be extremely difficult.

46 Types of Access Crossings Articulated blocks at low-flow crossing Portable bridge Permanent bridge