Fishing at Marshall Reservoir, Adams County, Colorado

• Overview

  Adams County in Colorado is where Marshall Reservoir sits. This is farm and woodlot ground. At roughly 5 acres, the whole thing is within casting reach of a single walk. The nearest place of any size is Todd Creek, 3.5 miles away. Northglenn lies 5.3 miles off, Thornton another 5.8 miles. Being near a boundary, it pays to know which side you are fishing.

• Where to Fish on Marshall 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. Species logged across Adams County include common carp, white sucker, bluegill and green sunfish. County records show what lives in the area; the local agency holds the water-by-water list. Treat Marshall Reservoir as a water to read rather than to cover.

• Seasonal Patterns

  Average temperature peaks around 73°F in July and bottoms out near 29°F in January. The calendar is generous: something works in nearly every month. In milder years the edges alone go, and the middle never sets. June to September is hot work, so the first and last hours are what count. Anyone fishing Marshall Reservoir regularly works to that calendar.

• Tackle & Baits

  Access is not recorded for this water. You will be walking about half a mile from the nearest car park. A picnic spot sits half a mile from the bank. Toilets show in mapping about half a mile away. A small crankbait along the drop and a worm in the thick stuff cover the bass. Read any posted signs at the access point rather than assuming. A polite question at the farm gate opens more banks than anything else. Wadley Reservoir Number 1 sits 1.9 miles off and takes the overflow. None of that is settled for Marshall Reservoir in what we hold.