• Catalog of Waters Important for the Spawning, Rearing, or Migration on Anadromous Fishes (Fish Distribution Database)
• Culvert Application Form (PDF 117KB)
• Fish Habitat Permit Information
• Fish Habitat Permit Application (PDF 56KB)
• Fish Habitat & Timber Fact Sheet
  (PDF 107KB)
• FH07-Statewide-001(PDF 432KB)(GP for Installation, Construction, Maintenance and Removal of Culverts in Resident (non-anadromous) Fish Streams in Conjunction with Commercial Timber Harvest Activities.
• Culvert and bridge construction/ maintenance design for fish passage
  (PDF 186KB)
• Stream Crossing Design for Fish Streams, North Slope Coastal Plain
  (PDF 2.3MB)
• Stream Diversion Techniques(PDF 1.7MB)
• Fundamentals of Culvert Design for Passage of Weak-Swimming Fish (SOA/DOT, FHWA-AK-RD- 90-10)
  (PDF 6.8MB)
• Juvenile Fish Passage through Culverts in Alaska: A Field Study (SOA/DOT, FHWA-AK-RD- 00-03)(PDF 1.9MB)
• Economic Culvert Design using Fish Swimming Energy and Power Capabilities
  (PDF 420KB)
• Power and Energy Implications of Passage Structures for Fish(PDf 1.4MB)
• Upstream Fish Passage at Dams and Culverts(WDFW)
• Wild Salmon Center
• Washington Department of Fish and Wildlife - Salmon Recovery
• Salix Applied Earthcare
• ADF&G Streambank Restoration Guide
• International Erosion Control Association
• River Corridor and Wetlands Restoration
• River Management Society
• NOAA Habitat Restoration

• U.S. Army Corps of Engineers
• U.S. Forest Service Land
• U.S. Environmental Protection Agency
• Alaska Department of Environmental Conservation
• Alaska Department of Natural Resources, Division of Mining Land and Water
• Kenai Peninsula Multi Agency Permitting

Bridge or culvert installation and maintenance activities in fish-bearing waterbodies require a Fish Habitat Permit. The Fish Habitat Permit Application(PDF 56KB), when completed, will provide the basic information required to evaluate the potential effects to fish and fish habitat for the desired installation. Adequate information regarding the stream discharge past the site at normal and flood flows, and the ability of the proposed structure to carry these flows, is essential to the successful installation and operation of a bridge or culvert.

Bridges that span the floodplain, even with piers within the active channel, offer the best solution for crossing streams (example). They generally require less instream maintenance over time than do culverts, provide less restriction to flow than do culverts, maintain transport of bedload, and maintain stream structure and flow characteristics better than do culverts. These characteristics also maintain conditions necessary for the passage of fish through the site. Bridges also minimize the disturbance to fish habitat.

Culverts, when properly designed, sized, and installed, provide a cost effective solution for crossing small streams (example). Factors that must be considered when installing culverts in streams include provisions to maintain transport of stream sediments past the crossing, aufeis formation (glaciation) in winter, flood flow conveyance, and the potential for scouring and scour pool (example) formation at the culvert.

FISHPASS provides the analytical capabilities to identify a culvert or parallel culverts that will pass weak swimming fish safely. The design procedure utilizes hydraulic formulas for profile drag, non-Archimedean buoyant forces, and virtual mass force to quantify the hydraulic conditions within a culvert that weak swimming fish can sustain without exhaustion.

Before using FISHPASS.EXE, read and be thoroughly familiar with the "Fundamentals of Culvert Design for Passage of Weak Swimming Fish", (Behlke et al. 1991. Alaska DOTPF Statewide Research Report Number FHWA-AK-RD-90-10 PDF 6.8MB). The required software data inputs and design results only will make sense if you are familiar with the underlying theory, foundation, and assumptions it explains.

SYSTEM REQUIREMENTS

Minimum: DOS 3.31 or higher with an 80286, 8088 or 8086 processor with 640 KB of RAM and a monochrome monitor is required.

A math co-processor will speed the computations up, but be aware that the program will run very slowly on an 80286, 8088, or 8086 processor.

Preferred: An 80386 processor, with a math co-processor, or an 80486-DX2 processor with a color monitor is recommended. The program is mouse-supported but can be run directly from the keyboard. Disk Space: The FISHPASS.EXE file occupies 181,728 KB of disk space.

Downloads

FISHPASS.EXE - Executable program to calculate fish passage requirements for culvert installations - 178K

FISHPASS.PDF - Documentation for Fishpass.exe program (FHWA-AK-RD-90-10) - 202K