Meeker Office Closure
The Meeker office is closed until further notice due to the Lee Fire. Please view the news release for additional details and alternative office information.
Meeker Office Closure
The Meeker office is closed until further notice due to the Lee Fire. Please view the news release for additional details and alternative office information.
State Park in Weld County, Colorado
Water Type:
Conditions:
Blue Heron Reservoir has excellent largemouth bass, great for walleye/saugeye, channel catfish, crappie, and redear sunfish.
Stocking Report:
Activities:
Common Species:
State Park in Weld County, Colorado
Water Type:
Conditions:
Blue Heron Reservoir has excellent largemouth bass, great for walleye/saugeye, channel catfish, crappie, and redear sunfish.
Stocking Report:
Activities:
Common Species:
Blue Heron Reservoir is one of ten ponds located within St. Vrain State Park.
St. Vrain is a nature- and people-friendly park offering 228 acres of water (not including wetlands and rivers). Come boat, walk on the trails, fish or just enjoy the natural beauty.
Colorado Parks and Wildlife is excited to announce Quality Waters, a new category of fishable waters that our talented team of fish management biologists has identified and nominated based on their fish sampling records, creel surveys, and professional biological assessments.
Park Location: I-25 and HWY 119 (east of Longmont).
Pond Location: Blue Heron Reservoir is directly South of the park entrance station.
Save Money
The Keep Colorado Wild Pass is $29.
Other pass options:
Hand-launched vessels that are hand or foot propelled or with electric trolling motors, along with inflatable devices with two or more chambers, are permitted on all ponds. All vessels and water users must observe all Colorado Boating Statutes and Regulations at all times.
Keep your time on the water fun and safe by following some simple safety guidelines.
You must wear a life jacket/personal floatation device (PFD) that is the correct size for you when engaging in water activities. Check with the park you are planning to visit to see if they offer loaner life jackets.
Be prepared for your day on the water by familiarizing yourself with the guidelines and regulations for your water activity.
Learn the RulesReservoir Acres: 82.0
Variety angling in a single park, each pond really has something different to offer. Exceptional for families and new anglers and great ice fishing. Park staff is quite incredible with a breadth of fishing knowledge. Blue Heron Pond has excellent largemouth bass, great for walleye/saugeye, channel catfish, crappie, and redear sunfish. This is the largest water on the park and trailered boats can launch.
Reservoir Features:
All anglers need a fishing license, but youth aged 15 and under fish for free. Reduced cost licenses are available for Colorado residents including: adults, youth aged 16 to 17, seniors, active duty members, first responders with disabilities, and veterans with disabilities.
All largemouth and smallmouth bass must be returned to the water immediately upon catch.
Only one channel catfish in bag or possession may be greater than 20 inches.
The ponds are stocked several times a year with selected species.
Crappie are a schooling fish that often congregate around vertical structures. Anglers have the most success for crappies jigging by structure in the early spring.
More About CrappieCasting lures and plugs during dawn and dusk hours around cattails and sunken logs will give you the best chance to land one of the lunkers.
More About Largemouth BassRhis sunfish prefers warm, clear waters with no noticeable current and an abundance of aquatic plants. Most active in daylight.
More Redear SunfishAnglers often fish for walleye when it is windy because the wind stirs up the bottom of a lake and makes the water turbid.
More About WalleyeAnglers have luck catching saugeye by trolling live bait or slowly retrieving jigs over bottom humps and points.
More About SaugeyeCatch a Record
Colorado Parks and Wildlife recognizes licensed anglers who catch exceptionally large fish through three separate programs, Record by Weight, Record by Length (released only) and Master Angler. Learn more about what it takes to be a Colorado record holder!
Species | Total Catch | Mean | Length (inches) Maximum | Minimum |
---|---|---|---|---|
Black Bullhead | 1 | 8.94 | 8.94 | 8.94 |
Black Crappie | 29 | 8.31 | 5.28 | 12.24 |
Bluegill | 150 | 6.99 | 4.02 | 9.76 |
Channel Catfish | 5 | 17.05 | 9.45 | 30.63 |
Gizzard Shad | 53 | 14.38 | 12.80 | 15.79 |
Largemouth Bass | 23 | 11.33 | 8.46 | 16.85 |
Redear Sunfish | 1 | 8.19 | 8.19 | 8.19 |
Saugeye | 18 | 16.42 | 11.97 | 26.14 |
Green Sunfish | 6 | 5.06 | 4.45 | 6.06 |
Walleye | 106 | 13.59 | 7.56 | 24.54 |
White Bass | 6 | 9.63 | 7.09 | 12.32 |
Yellow Perch | 6 | 9.71 | 9.21 | 10.08 |
To boat on the reservoir, an aquatic nuisance species (ANS) stamp, current boat registration and a pre-launch boat inspection is required.
Vessels and other floating devices that are both hand-launched and human-powered are exempt from mandatory ANS inspections.
There are no ANS inspections for boats at St. Vrain State Park. Please remember to have your boat inspected ahead of time.
The closest ANS inspection locations are at Boulder Reservoir, Barr Lake State Park, Boyd Lake State Park and Stanley Lake. See the list linked below for inspection locations.
Eurasian watermilfoil has been detected in the reservoir at St. Vrain.
It is an aquatic noxious weed that forms dense mats which restrict swimming, fishing, and boating.
Aquatic Nuisance Species
Invasive species of plants and wildlife harm Colorado's land and water, negatively impacting the state’s economy, recreation, property values and public health. Invasive wildlife spread by hitchhiking on watercraft, trailers, vehicles, tires, boots, waders, equipment, gear, firewood and even dogs!
Angling — Prevent the Spread of Aquatic Invasive Species
After cleaning their gear, anglers should then perform one of the following options to disinfect their gear before going into the next body of water or moving to a new stretch of river.
El folleto de Manual de Navegación en línea es la versión más actualizada.
Descargue el FolletoThe online Fishing brochure is the most up-to-date version.
Download the BrochureEl folleto de Pesca en línea es la versión más actualizada.
Descargue el FolletoHave a question about regulations? Check the brochure.
Download the BrochureIf you use water, aquatic nuisance species (ANS) can affect you. For example, Zebra and quagga mussels clog up the infrastructure that delivers water to our homes. Keeping invasive species under control is a matter of public health.