ANDERSON RIVER PARK SIDE CHANNEL HABITAT RESTORATION PROJECT Public - - PowerPoint PPT Presentation

Public Outreach Meeting June 5, 2017

SIDE CHANNEL HABITAT RESTORATION PROJECT

ANDERSON RIVER PARK

Welcome and Introductions

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

Providing Feedback

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.

Historic Range for Salmon Runs Current Range for Salmon Runs

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.

Market Street Gravel North Cypress Channel North Tobiasson Rearing Structures Painter’s Riffle Channel/Gravel Shea Island Channel/Gravel South Cypress Channel

Anderson River Park Channel

Kapusta Side Channel

Green = Completed Orange = In Progress Yellow = Planning

Status of Shasta County Projects

Keswick Dam Gravel

Guiding Principles for Planning

• Maximize benefit to endangered/

threatened salmonids

• Minimize disturbance/impacts
• Other benefits, where possible

North Cypress Side Channel Project Example…

Large Woody Debris Overhanging Vegetation Low Velocity, Ideal Depth

Guiding Principles for Planning

• Maximize benefit to endangered/ threatened

salmonids

• Minimize disturbance/impacts
• Other benefits, where possible

Followed Path of Least Resistance New Native Plantings Maintained Vegetation

Guiding Principles for Planning

• Maximize benefit to endangered/threatened

salmonids

• Minimize disturbance/impacts
• Additional benefits, where possible

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

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.

Channel is clearly visible Channel is filled in

9/9/1998: 12,000 CFS 8/27/2013: 10,000 CFS

Years of Change

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

Stranding Locations

Why Anderson River Park?

• Minimize disturbance/impacts

– Existing use for recreation and natural area are complementary land use.

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

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
• 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
• T

est pits

• 90% Design
• 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

• 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)

Next Steps

Thank you for your time.

Questions? T

• 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

30 ft width Bank full Depth: 10ft 13,000 CFS Depth: 6ft 6,000 CFS Depth: 4ft 4,000 CFS Depth: 2ft

Cross Section: A

Typical Summer Flows: 11,500 cfs Typical Winter Flows: 4,000 cfs 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.

Cross Section: B

60 ft width

Shallow Water Crossings

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 Typical Winter Flows: 4,000 cfs In order to provide shallower depths, the shallow water crossings would be wider than

• ther locations in the channel. This helps to

maintain velocity and allows us to maintain suitable habitat above and below crossings.

Standard Channel Depth: 10 ft Minimum: 2 ft Standard Shallow Crossing Depth: 2-4 ft Minimum: 1 ft

Cross Section: A Cross Section: B

Dry* Crossing at 14,000 CFS Dry* Crossing at 14,000 CFS Consistently Wetted Channel Periodically Dry Crossing Dry Crossings indicate that you are likely to be stepping

• n 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 The consistently wetted channel is wet at all flows, and crossing without getting wet would be extremely difficult.

Types of Access Crossings

Articulated blocks at low-flow crossing Portable bridge Permanent bridge