Lake Piru Professional Review and Guide
"Lake Piru often gets overlooked because it’s located so close to a number of stellar fisheries, including Piru Creek and Castaic Lake and Lagoon. The lake also gets overlooked because it isn’t known as a trophy bass fishery. Sure, there are largemouth on hand, but the best bite at Piru is usually for rainbow trout. Boat anglers typically troll for trout near the dam and south end of the lake in 30-plus feet of water. Needlefish and large Rooster Tails are the top baits with most fish running in the 1- to 2-pound class. This fly-fishing chapter describes the "where, when, and how" for fishing in this area. It includes a full-page map and information on the known hatches, suggested equipment to use, the best flies to use, season, limits, nearby accommodations, and camping."