Fish Passage Case Studies
All Crossings
The Flash player is required to properly view each case study
Case Studies .: About .:. Evaluate |
Bridge with step-pool channel for grade control |
||
Culvert Retrofit, Corner Baffle Retrofit, Hydraulic Design |
||
Stream simulation at 4% slope with bed retention sills |
||
Stream simulation of steep (7.7%) step-pool channel using bed retention sills |
||
Cheese Creek Embedded Squash Pipe |
||
Bottomless Arch Culvert w/Concrete Footings, Stream Simulation Design |
||
Low-water crossing with added low-flow culvert |
||
Bottomless Arch Culvert, Roughened Rock Channel |
||
Low-Water Crossing with Concrete Planks Buttressed by Concrete Median Barriers and Rock Weir |
||
Low-Water Crossing Using Stone Filled Geocells |
||
Culvert Retrofit with Corner Baffles, Downstream Channel Regrade with Concrete and Rock Weirs to raise tailwater. |
||
Stream Simulation Bottomless Arch Culvert with Step-Pool Reaches to Control Channel Profile |
||
Roughened channel with prefabricated bridge to provide passage over dam and preserve impounded wetland |
||
Culvert Rehabilitation with Metal Insert, Corner Baffle Retrofit, Hydraulic Design, Placement of Concrete Weirs |
||
Hybrid Pool and Weir Fishway with Concrete Pools and Removable Wood Baffles, Hydraulic Design |
||
Stream Simulation, submersible bridge with collapsible railings |
||
Embedded Circular Culvert |
||
Concrete Bottomless Arch Culvert with Regraded Channel and Sediment Removal, Stream Simulation Design |
||
Arch culvert with simulated steep boulder channel anticipated to form step-pools |
||
Embedded pipe-arch culvert with downstream boulder grade control |
||
Concrete pool and vortex weir fishway, partially covered by metal arch culvert. |
||
Grouted rock step pools below outlet, Retrofit box culvert with offset baffles |
||
Pre-Cast Concrete Bridge with Boulder Steps on Steep Stream |
||
Side-hinged tidegate with auxiliary door to create upstream muted tide |
||
Concrete Fishway and Rock Grade Control |
||
Tributary to S.F. Winchuck River Stream Crossing Decommisioning |
||
Complete removal of the road-stream crossing and reconstructing of the stream channel |
||
Culvert extension for highway widening, addition of concrete weirs, and construction of grouted roughened channel below outlet apron |
||
Reconstruction of incised channel to eliminate perched bridge apron |
||
Constructing small step-pools into rock & concrete bridge apron |
||
Retrofit with pool-and-weir fish ladder around grade control structure at bridge crossing |
||
Stream Simulation, bottomless arch, undermined footing retrofit with concrete weir-struts |
||
Stream Simulation, Open Bottom Concrete Arch |
||
Boulders randomly placed below culvert to raise channel grade and eliminate a perched outlet |
||
Metal Box Culvert with Concrete Fishway and Rock Grade Control |
||
Removal of flashboard dam, requiring addition of boulder weirs below upstream culvert |
||
Culvert embedded and channel regraded with boulder weirs that failed during first year |
||
Concrete Bottomless Arch Culvert with Grade Control |
||
Stream Simulation with Modular Bridge |
||
Stream Simulation, Bottomless Arch Culvert |
||
Box culvert retrofit with angle baffles and 3 downstream rock weirs |
||
Bottomless Arch Culvert w/ Concrete Footings, Stream Simulation |
||
Culvert Retrofit, Offset Baffle Retrofit, Hydraulic Design |