Ralston Reservoir, Colorado: Fishing Spots and Seasons

• Overview

  Set in Jefferson County, Ralston Reservoir is a Colorado water. It sits at 6,027 feet above sea level. It runs to roughly 154 acres — big enough to hold fish away from the bank, small enough to learn. Around 2.4 miles of margin, front to back. It is among the larger waters listed here for Jefferson County. Golden is the closest place, 5.2 miles off. The nearest city of size is Arvada, an 8.7 miles drive. You are close to a county edge here; who manages the access can change within a short drive.

• Where to Fish on Ralston Reservoir

  No depth figure appears in our records, so the bank has to tell you. Draw-down through summer strips the margins, so follow the water out. The old creek line under the surface is the feature worth finding. Open biodiversity records for Jefferson County list rainbow trout, brown trout, common carp and green sunfish. County records show the wider picture rather than this one place. Take Ralston Reservoir a stretch at a time.

• Seasonal Patterns

  Long-term averages put July at about 71°F and January near 31°F. Mild ends to the year keep the season long. It should never be assumed safe, whatever the month says. The hot months push the fishing to dawn and dusk. Plan around that when you fish Ralston Reservoir. Sudden cold puts fish down faster than sustained cold does.

• Tackle & Baits

  Whether you may fish here is not something records settle. Mapping puts a reserve boundary across this water; check what it allows. For the trout, small spinners and a box of nymphs cover both approaches. Where access is informal, keep it that way by behaving. Barbless rules turn up on managed water more often than not. If the gate is shut, Upper Long Lake at 0.7 miles is the nearest alternative. Signs at Ralston Reservoir carry more weight than any list.