Grant B Reservoir, Colorado: Fishing Spots and Seasons

• Overview

  Colorado holds Grant B Reservoir, in Broomfield County. It stands 5,361 feet above sea level. At roughly 14 acres, the whole thing is within casting reach of a single walk. You are 2 miles from Broomfield. Further out sit Lafayette (3.1 miles) and Louisville (3.4 miles). The boundary is near enough that local access rules are worth double-checking.

• Where to Fish on Grant B Reservoir

  The records we hold are silent on depth, so plan to find it yourself. Look for where the old bank line still shows under the surface. The arms fish better than the open middle whenever the water is up. Across Broomfield County, recorded fish include common carp, bluegill, green sunfish, white sucker and black crappie. County data is a starting point rather than a guarantee. Take Grant B Reservoir a stretch at a time.

• Seasonal Patterns

  Between January at about 30°F and July at about 73°F, the water has a wide range to work through. The freeze here is occasional rather than annual. It is not guaranteed even in a cold spell, so check yourself. The hot months push the fishing to dawn and dusk. Grant B Reservoir fishes to that pattern most years.

• Tackle & Baits

  The access position is unclear from public sources. Records show it does not hold water year-round. Parking sits half a mile out, which makes for a walk with tackle. Light line and small metal for the trout; a fly rod earns its place on calm evenings. Read any posted signs at the access point rather than assuming. Night access is frequently treated as a separate matter. Nissen Reservoir Number 2 sits 1.2 miles off and takes the overflow. Ask locally about Grant B Reservoir if anything is unclear.