Mallard Pond
State Park in Weld County, Colorado
Water Type:
Conditions:
Variety angling in a single park, each pond really has something different to offer. Exceptional for families and new anglers. Mallard Pond is great for seasonal trout and panfish.
Stocking Report:
Common Species:
Mallard Pond
State Park in Weld County, Colorado
Water Type:
Conditions:
Variety angling in a single park, each pond really has something different to offer. Exceptional for families and new anglers. Mallard Pond is great for seasonal trout and panfish.
Stocking Report:
Activities:
Common Species:
About Mallard Pond
Mallard Pond is one of ten ponds located within St. Vrain State Park.
About 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.
About Quality Waters
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.
Activities at this Location
Boating
Fishing
Camping Nearby
Picnicking Nearby
Visit Mallard Pond in St. Vrain State Park
Park Location: I-25 and HWY 119 (east of Longmont).
Pond Location: Mallard Pond is right behind the Camper Services Building at St. Vrain state park. The pond can be accessed from the far east end of the Pelican Campground, or by crossing a footbridge on the northwest side of Mallard Pond.
Save Money
Use the Keep Colorado Wild Pass
The Keep Colorado Wild Pass is $29.
Other pass options:
- Affixed Vehicle Parks Pass $80
- Family Multi Vehicle Pass $120
- Individual Pass (foot and bike traffic only) $29
Boating at Mallard Pond
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.
Stay Safe on the Water
Keep your time on the water fun and safe by following some simple safety guidelines.
Life Jackets
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.
Boating Rules
Be prepared for your day on the water by familiarizing yourself with the guidelines and regulations for your water activity.
Learn the RulesFishing at Mallard Pond
Pond Acres: 7.0
Exceptional for families and new anglers and great ice fishing. Park staff is quite incredible with a breadth of fishing knowledge. Mallard Pond is great for seasonal trout and panfish.
Mallard is primarily managed for 10-inch trout; heavily stocked in the spring and late fall (ice angling). Roughly 4,000 catchable trout are stocked annually. Trout stocking at the park typically does not occur between May 15 – September 15 because of warm water temperatures.
Pond Features:
- A concrete boardwalk with a safety rail circling the back side of the Barbour Ponds Camper Services Building
Don't Forget Your Fishing License
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.
Rules and Restrictions
While there are no special regulations for this location, see the Colorado fishing brochure for general fishing rules and regulations.
Fish at this Location
The ponds are stocked several times a year with selected species.
Rainbow Trout
Rainbow trout may be caught with a variety of flies, baits, and lures.
More About Rainbow TroutCatch a Record
Fishing Awards and Records
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!
Fishing Survey
Mallard is primarily managed for 10-inch trout; heavily stocked in the spring and late fall (ice angling). Roughly 4,000 catchable trout are stocked annually. Trout stocking at the park typically does not occur between May 15 – September 15 because of warm water temperatures.
Mallard Pond, July 2016, Boat Electrofishing 7.5 minutes and 1 Gillnet
| Species | Total Catch | Mean | Length (inches) Maximum | Minimum |
|---|---|---|---|---|
| Black Crappie | 19 | 5.42 | 4.17 | 5.87 |
| Bluegill | 18 | 3.94 | 2.99 | 4.88 |
| Channel Catfish | 3 | 11.99 | 9.37 | 15.43 |
| Common Carp | 11 | 21.80 | 17.05 | 28.43 |
| Gizzard Shad | 29 | 9.44 | 7.17 | 13.31 |
| Largemouth Bass | 9 | 12.24 | 5.59 | 16.61 |
| Walleye | 2 | 19.41 | 18.90 | 19.92 |
| Yellow Perch | 5 | 13.02 | 11.50 | 14.3 |
Mandatory Boat Inspections for ANS Before Coming to St. Vrain
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.
Inspection Locations
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
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
How to Clean Your Hand Launch Vessels and Fishing Gear
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 — How to Clear Your Gear Video
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.
Option 1
- Disinfect waders and gear with quaternary ammonia cleaner (QAC).
- After cleaning, submerge gear in a tub filled with a solution of 6oz QAC/gallon of water for at least 10 minutes. Follow all precautionary label instructions!
- Rinse water must be from a clean source to avoid re-infection.
- Dispose of the chemical bath properly away from any waters.
Option 2
- Heat treat your gear by soaking or spraying for 10 minutes with 140o Fahrenheit water.
Option 3
- Dry your waders and equipment completely for a minimum of 10 days between use.
Option 4
- Freeze your waders and boots overnight between use.
Clean
- Keep your distance from storm drains and new bodies of water while cleaning all equipment.
- Remove all visible plant material, animals, and mud from the hull, trailer and all compartments including footwells and storage areas.
- Clean all other equipment that was used including paddles, dry storage bags, leashes, anchors and lifejackets.
Dr
- Ensure that all water has been drained from your inflatable watercraft.
- Carry your kayak, canoe, or paddleboard to a dry location to drain and dry. Tilt and lift your watercraft to empty any water that has pooled inside the interior compartments.
- If your inflatable watercraft has a two-layer (bladder/shell) construction or a floor that allows water inside the shell, be sure to drain all the areas where water could be trapped.
Dry
- Sponge or towel any water that remains on the watercraft following your draining process.
- Find a place where the kayak, canoe or paddleboard can continue to dry completely.
- Leave your watercraft inflated until it is completely dry. When fully dry, place the air valve down when deflating to prevent water from getting inside.
Boating and Fishing Regulations
.jpg?itok=3j7f2foI "Manual de Navegación.")
Manual de Navegación (En Español)
El folleto de Manual de Navegación en línea es la versión más actualizada.
Descargue el FolletoColorado Fishing Brochure
The online Fishing brochure is the most up-to-date version.
Download the BrochurePesca en Colorado (En Español)
El folleto de Pesca en línea es la versión más actualizada.
Descargue el FolletoLand and Water Regulations Brochure
Have a question about regulations? Check the brochure.
Download the Brochure
Be a Pain in the ANS!
If 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.