Edge adapter for athletic playing surface and associated method
Embankment dam and waterproofing method
End dam assembly for drainage channel
Energy-efficient automatic sluice gate for sustaining a fluid le
Engineered environmental structure and method of its use
Environmentally compatible archway for road building
Erecting/lying-down dam or sluice gate made of flexible sheet
Erecting/lying-down dam or sluice gate made of flexible sheet
Expansion-sealed flood control gate
Farm pond sediment diverter
Fish conveying apparatus
Fish diversion system
Fish elevator and method of elevating fish
Fish guidance system
Fish guiding assembly and method utilizing same
Fish holding pan on traveling water screen and method of flushin
Fish ladder and its construction
Fish ladder for passing dams
Fish protection system for dams
Fish protective water extraction method and apparatus