Private 6-Hour Union Reservoir Fishing
Private Trip
Lakes/Reservoirs/Ponds Fishing
Six-hour private walleye and wiper fishing experienceMultiple species including trout, bass, and crappie availableNorthern Front Range location near Denver with limited availability
Looking for a solid day of fishing without the crowds? Union Reservoir delivers some of the most consistent walleye and wiper action on Colorado's Front Range, and I'm stoked to share this hidden gem with you. Just 30 minutes from Denver, this 735-acre lake sits in the shadow of the Rockies and holds an impressive variety of fish that'll keep your rod bent all day long. Whether you're chasing aggressive wipers on topwater or working the bottom for chunky walleye, Union Reservoir has earned its reputation as a go-to destination for serious anglers who want results.
Your six-hour adventure starts early when the fish are most active and the lake's still quiet. We'll launch from the north boat ramp and immediately start reading the water – Union's got some killer structure that holds fish year-round, including submerged timber, rocky points, and drop-offs that walleye absolutely love. The reservoir's relatively shallow north end warms up first in spring, making it prime territory for spawning fish, while the deeper southern basin holds cooler water and bigger fish during summer months. I'll have you rigged up with the right tackle for conditions, whether we're trolling crankbaits for walleye, throwing spinnerbaits for bass, or working jigs for whatever's biting. The beauty of Union is its diversity – when one species slows down, we can quickly pivot to target something else. Pack layers since Front Range weather can shift quickly, and don't forget your Colorado fishing license and trout stamp.
Union Reservoir fishing is all about adapting to what the fish want on any given day. For walleye, we'll primarily troll Rapala Shad Raps and bottom bouncers with crawler harnesses along the 15-25 foot depth contours where these fish cruise. When wipers are actively feeding, nothing beats the excitement of throwing topwater plugs like Spooks or Pop-Rs during their famous feeding frenzies – you'll hear them busting baitfish from hundreds of yards away. Bass fishing here requires finesse during clear water conditions, so we'll work drop-shot rigs, ned rigs, and small plastics around cover. The trout respond well to traditional methods like PowerBait off the bottom or small spinners cast toward the dam. I provide all the rods, reels, and terminal tackle you'll need, but feel free to bring your favorite setup if you prefer fishing with familiar gear. The key to success at Union is staying mobile and watching your electronics – this lake's fish move frequently based on wind, weather, and baitfish activity.
Walleye are Union Reservoir's crown jewel, with fish averaging 14-18 inches and plenty of 20+ inchers swimming around to make your day. These golden beauties are most active during low-light periods – early morning, late evening, and overcast days when they move shallow to feed. Spring spawning season (April-May) offers the best numbers, while fall produces the biggest fish as they bulk up for winter. Walleye fight with that distinctive head-shaking action and make excellent table fare if you're looking to take dinner home.
Wipers (white bass hybrids) provide the most action-packed fishing Union has to offer. These aggressive fighters average 2-4 pounds but can reach 8+ pounds, and when they're feeding on schools of shad, the surface explodes with activity. Summer months are prime time for wiper action, especially during their famous "boils" when dozens of fish push baitfish to the surface. Their powerful runs and acrobatic jumps make them a favorite among sport anglers.
Rainbow trout in Union range from stocked 12-inchers to holdover fish pushing 20+ inches that have learned to feed on the abundant forage base. These fish are most cooperative during cooler months and provide steady action when other species are sluggish. The bigger rainbows have turned predatory, feeding on smaller fish rather than just insects and pellets.
Largemouth bass might not be huge here, but they're scrappy fighters that love the shallow coves and weed beds. Most run 12-16 inches with occasional fish over 18 inches. Spring and fall are prime time when they're actively feeding in the shallows, and they provide great sport on lighter tackle.
Bluegill are Union's underrated panfish that spawn in massive colonies during late spring, creating some of the most fun fishing you'll find anywhere. These hand-sized fighters are perfect for light tackle and provide non-stop action when you locate their spawning beds in 3-8 feet of water.
Union Reservoir consistently produces fish when other Front Range lakes struggle, and there's something special about having this productive water all to yourself for six hours. The combination of diverse species, stunning mountain views, and fish that actually bite makes this one of Colorado's top-rated guided fishing experiences. Availability fills up quickly, especially during peak spring and fall seasons when the fishing's at its best. Whether you're a seasoned angler looking to learn new water or someone wanting to experience world-class Colorado fishing without the drive to mountain lakes, this trip delivers results. Don't wait – secure your spot today and get ready to experience why Union Reservoir has become the go-to destination for serious Front Range anglers.
This reliable 18' Lund motorboat puts you right where the fish are biting at Union Reservoir. Built in 2004 and powered by a 135HP Mercury engine, she'll get you across the lake quickly to target those walleye and wiper hotspots. The wireless trolling motor keeps things quiet when you're working structure for bass or drifting for trout, while the fish finder helps locate schools of crappie and bluegill in deeper water. GPS navigation makes it easy to return to productive spots or explore new areas of this scenic Colorado lake. With space for you and your gear, this setup gives you the mobility to fish the entire reservoir effectively. Whether you're casting for largemouth bass along the shoreline or trolling the main lake for walleye, this boat handles Union Reservoir's waters with confidence and gets you on the fish fast.
Lepomis MacrochirusThese scrappy panfish average 6-10 inches and pack more fight than their size suggests. Bluegill love shallow water near vegetation, fallen logs, or any structure where they can ambush insects and small prey. You'll typically find them in schools, so once you locate one, expect company. Spring through early fall offers the best action when water temps hit 65-75°F. They're perfect for families since they bite readily on simple setups - worms under a bobber work great. The meat is sweet and flaky, making them excellent table fare. Here's a local trick: during spawning season, look for the circular beds they create in sandy shallows. Males guarding nests are aggressive and will hit almost anything you drop near their territory.
Micropterus SalmoidesUnion's largemouth typically run 12-16 inches, though bigger ones lurk near cover. These ambush predators hang around fallen timber, weed lines, and rocky drop-offs where they can surprise prey. Spring and fall provide the most consistent action when bass move shallow to feed. What makes them special is that explosive strike and aerial show they put on when hooked. Their aggressive nature and willingness to hit topwater lures makes every cast exciting. While catch-and-release is common, smaller bass make decent eating. During hot summer days, focus your efforts early morning or late evening when they're most active. My go-to technique here is working a Texas-rigged soft plastic along the dam face where the structure changes quickly.
Oncorhynchus MykissRainbow trout in Union typically range 12-16 inches and are beautifully colored with that distinctive pink stripe. These cold-water fish prefer deeper, cooler areas during summer but move shallow during spring and fall when temps drop. Early morning and evening provide the best action, especially during overcast conditions. What makes them special is their acrobatic fighting style - expect jumps and strong runs on light tackle. The pink flesh has a mild, sweet flavor that's hard to beat on the table. Spring offers prime fishing as they become more active after winter. Focus on areas near the inlet where cooler, oxygenated water flows in. A productive local technique is drifting small spoons or PowerBait near the bottom in 20-30 feet of water during midday when they're holding deep.
Sander VitreusUnion's walleye are the main attraction, typically running 14-20 inches with some true trophies over 25. These golden predators prefer deeper structure during daylight - rocky points, drop-offs, and creek channels in 15-25 feet of water. Low-light periods at dawn and dusk trigger the best feeding activity. Walleye are prized for their delicate, flaky white meat that's considered among the best-eating freshwater fish. Their light bite requires sensitivity, but once hooked they make strong, determined runs. Spring and fall offer peak action when they're most aggressive. Success here depends on staying mobile and covering water until you locate active schools. My local secret: slow-trolling live nightcrawlers on bottom bouncers along the old creek channel produces consistent results when other methods fail.
Morone ChrysopsThese silvery fighters average 10-14 inches and are known for their aggressive schooling behavior. White bass roam open water but concentrate around points, humps, and creek channels where they corral baitfish. Spring and early summer offer peak fishing as they move shallow for spawning. What draws anglers back is their hard-fighting nature - they'll bend your rod and make multiple runs before giving up. The firm, white meat has excellent flavor when prepared fresh. When you find one school, stay with it since they travel in groups of dozens. Look for diving birds or surface activity that signals feeding schools. A productive tip for Union: small white jigs worked vertically through suspended schools near the thermocline during summer mornings consistently produces limits.
Colorado