Wallace Weir Fish Rescue Facility Issue Wallace Weir Fish Rescue - PowerPoint PPT Presentation

Wallace Weir Fish Rescue Facility Issue

Wallace Weir Fish Rescue Facility Issue

Wallace Weir Fish Rescue Facility Sacramento River Feather River KLOG Fish Entry to CBD Sacramento River Colusa Drain Knights Landing Ridge Cut Wallace Weir Fish Entry to CBD 4

Knights Landing Outfall Gate Fish Barrier Project Built in 2015

Wallace Weir Replacement Project Scheduled to be Built in 2016

Design Considerations for Wallace Weir

Wallace Weir Fish Rescue Facility

PORTION OF EXISTING WEIR DEGRADED EACH WINTER

WINTER FLOWS ERODE REMAINDER

FREMONT WEIR FLOWS INUNDATE WALLACE WEIR

ADHOC FISH TRAP DOWNSTREAM

NOT EFFECTIVE AT LOW OR HIGH FLOWS

NEW WALLACE WEIR Existing Weir New Fish Trap New Flow Control Structure with Bridge New Earthen Weir New Access Ramps

NEW WALLACE WEIR – AERIAL VIEW New Fish Trap Existing Weir New Flow Control New Earthen Weir Structure with Bridge New Access Ramps

Fish Trap 3 Bottom Hinged Gates New Earthen Weir 6 Picket Weir Screens New Bridge over Structure

Hydraulic Design Parameters KLRC Flow Exceedance Percentile 1% 99% 3,989 cfs 4.5% 95.5% 2,960 cfs 5% 95% 2,831 cfs 8% 92% 1,991 cfs 10% 90% 1,670 cfs

Hydraulic Design Parameters

Hydraulic Design Parameters

Hydraulic Design Parameters

1,000 cfs KLRC Flow Example

Questions?