(appeal of summary judgment in favor of Army Corps finding issuance of permit under Clean Water Act for 960-acre fishing lake not arbitrary and capricious; court rejected plaintiffs’ arguments for arbitrariness including failing to independently evaluate studies, failing to fully explain need for lake when contradictory evidence existed, accounting for out of state fishing licenses, and reducing unmet demand by twenty percent; court also rejected plaintiffs’ allegations that Army Corps did not sufficiently account for impact on wetlands beyond those identified by Corps; district court judgment affirmed).