Peterson Lake Fishing Guide, Boulder County, Colorado

• Overview

  Peterson Lake is one of the Boulder County listings for Colorado. It sits in mixed forest country. About 20 acres of surface, which puts the far bank inside easy sight. Nederland lies 3.5 miles from the water. Coal Creek is 11 miles away, with Fraser at 13 miles. Two sets of local rules meet not far from this water. Rain totals near 19 inches, with the dry end in February.

• Where to Fish on Peterson Lake

  We hold no depth figure for this one. Held water runs deepest at the wall and shallows back to the inflow. Standing timber shows when the level drops, and fish sit against it. County-wide records name black-spotted cutthroat trout, brook trout, brown trout, bluegill and rainbow trout. Take it as the county picture rather than a promise for this water. Peterson Lake responds to conditions more than to tactics.

• Seasonal Patterns

  Seasonal averages run from 24°F in January up to 57°F in July. Cold winters and warm summers give a wide working range. Count on hard cover from midwinter, and open water from early May. Expect the water usable from around early May until roughly late November. Just after the ice goes and just before it returns, the fishing lifts. Time your trip to Peterson Lake by conditions rather than dates.

• Tackle & Baits

  Whether you may fish here is not something records settle. Parking is not close: half a mile from the bank, and no nearer option is mapped. Facilities run to toilets half a mile from the water. For the trout, small spinners and a box of nymphs cover both approaches. Parking is often the real limit rather than the bank itself. Where parking is tight, arriving early solves most problems. Karel Park Lake at 2.5 miles is the sensible second choice. Check the position at Peterson Lake before loading the car.