ANDERSON RIVER PARK SIDE CHANNEL HABITAT RESTORATION PROJECT Public Outreach Meeting June 5, 2017
Welcome and Introductions
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: https://tinyurl.com/yba7c7oo to provide feedback online Contact us any time. Harmony Gugino – Project Manager harmony@westernshastarcd.org, 530-776-9433 Jan Raether – Project Coordinator jraether@westernshastarcd.org, 530-776-9427
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
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.
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
Status of Shasta County Projects Keswick Dam Gravel Painter’s Riffle Channel/Gravel Market Street 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
Guiding Principles for Planning • Maximize benefit to endangered/ threatened salmonids • Minimize disturbance/impacts • Other benefits, where possible North Cypress Side Channel Project Example…
Overhanging Vegetation Low Velocity, Ideal Large Woody Debris Depth
Guiding Principles for Planning • Maximize benefit to endangered/ threatened salmonids • Minimize disturbance/impacts • Other benefits, where possible
Maintained Vegetation Followed Path of New Native Plantings Least Resistance
Guiding Principles for Planning • Maximize benefit to endangered/threatened salmonids • Minimize disturbance/impacts • Additional benefits, where possible
Clean-up & impede encampments Invasive species removal & improve access
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.
Years of Change 8/27/2013: 10,000 CFS 9/9/1998: 12,000 CFS Channel is clearly visible Channel is filled in
Stranding Locations During high flows, juvenile salmon are stranded in low-lying areas
Why Anderson River Park? • Minimize disturbance/impacts – Existing use for recreation and natural area are complementary land use.
Source: Record Searchlight Source: Shastadogs.com Source: Record Searchlight Source: Safe Haven Rescue Journal
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
Number of mosquito larval treatments (2008-present)
Potential to create detailed trail map – this map includes administrative, horse, and walking trails
Planning and Design • Site recommendations • Site recommendations Programmatic environmental assessment Site inspections • • TAC review Conceptual design alternatives • • Site-specific resource surveys Engineering surveys • • TAC review/land manager input 30% design/modeling (maximum habitat) • • Evaluate impacts (beneficial, negative) 60% design/modeling • • • Test pit permits/approvals • T est pits • Outreach #1 • 90% Design • Project permits/approvals • Construction
deeper low-lying areas + connection to backwaters + max suitable depth and velocity + large woody debris = 6 acres new juvenile rearing habitat
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
T est Pit Locations
T est Pit Locations
T est Pit #1 Location: western side channel Vegetation: none WOUS: cobble/gravel riverine
T est Pit #2 Location: western side channel Vegetation: grasses WOUS: vegetated riverine
T est Pit #3 Location: adjacent to central side channel Vegetation: grasses WOUS: vegetated riverine
T est Pit #4 Location: central side channel Vegetation: grasses, willow WOUS: palustrine emergent persistent
T est Pit #5 Location: central side channel Vegetation: grasses WOUS: palustrine emergent persistent
T est Pit #6 Location: central side channel Vegetation: grasses WOUS: palustrine emergent persistent
T est Pit #7 Location: eastern side channel Vegetation: none WOUS: cobble/gravel riverine
T est Pit #8 Location: adjacent to eastern side channel Vegetation: grasses WOUS: cobble/gravel riverine
T est Pit #9 Location: eastern side channel Vegetation: grasses WOUS: palustrine emergent persistent
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)
Thank you for your time. Questions? T o provide feedback online visit: https://tinyurl.com/yba7c7oo
Depth and Access
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
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
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
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 Typical Summer Flows: The standard channel would have approximately 11,500 cfs 3:1 slopes , and be at least two feet deep at minimal flows to provide optimal fish habitat Typical Winter Flows: at reduced flows. 4,000 cfs
Shallow Water Cross Section: B Crossings 60 ft width Bank full Depth: 6ft 13,000 CFS Depth: 4ft 6,000 CFS Depth: 2ft 4,000 CFS Depth: 1ft Typical Summer Flows: 11,500 cfs In order to provide shallower depths , the shallow water crossings would be wider than Typical Winter other locations in the channel. This helps to Flows: maintain velocity and allows us to maintain 4,000 cfs suitable habitat above and below crossings.
Standard Channel Depth: 10 ft Minimum: 2 ft Cross Section: Cross Section: A B Standard Shallow Crossing Depth: 2-4 ft Minimum: 1 ft
Dry Crossings indicate that you are likely to be stepping Dry* Crossing at 14,000 on rocks, or up to shin CFS deep in standing, or slowly Dry* Crossing at 14,000 moving water. CFS Periodically dry crossings indicate that these areas Periodically Dry Crossing may be dry crossings at the lowest flows, but typically the water is too deep to cross The consistently wetted channel is wet at all flows, and crossing without getting wet would be Consistently Wetted Channel extremely difficult.
Types of Access Crossings Articulated blocks at low-flow crossing Portable bridge Permanent bridge
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