June is usually a great time to go fishing in Colorado.
The Blue River is a good choice it has 3 good sections, the Blue river, Dillon Reservoir, Green Mountain Reservoir. The Blue river flows threw those 2 reservoirs and past Green Mountain. So lots of camping areas. Here are some others that are good in June according to the DOW.
CHERRY CREEK RESERVOIR: There is premier trophy walleye fishing at Cherry Creek. Best fishing occurs in mid-May to early June with jigs, bait and plugs along the dam and island. Anglers can also find crappies, wipers and catchable stocked trout. A State Parks Pass is required. Location: Interstate 225 to Parker Road, south on Parker Road to the east entrance off South Yosemite Street.
SPINNEY MOUNTAIN RESERVOIR: The place for consistent large rainbows (16-inch plus), browns and Snake River cutthroats. Best fishing right after April ice-out. Excellent belly boat or shore fishing and trophy northern pike can be taken, best in June. A State Parks Pass is required. Location: West of Colorado Springs on Highway 24 for 55 miles to Country Road 23. Drive south for 2.8 miles and east on County Road 59 for 1 mile to entrance
CONEJOS RIVER: The Conejos River is providing excellent fishing for wild brown and rainbow trout. Prolific hatches of stoneflies, caddisflies and mayflies occur from May through July. Best fishing follows snow runoff in late June and July. Special regulations apply to two stretches. Location: Lower section: from Antonito 16 miles west on Highway 17 to Aspen Glade Campground. Access is through fishing easements on private property. Upper section: from Antonito 21 miles west on Highway 17 to USFS Road 250. Drive 9 miles north to public land upstream of South Fork Conejos River Confluence.
RIO GRANDE: The mighty Rio Grande begins its long journey to the Gulf of Mexico high in the San Juan. Look for good brown and rainbow trout fishing from Rio Grande Reservoir downstream to Del Norte. Fly-fishing is best June through July when stonefly and mayfly hatches dominate fish diets. The Gold Medal section from South Fork to Del Norte provides trophy brown trout. Location: West of Del Norte and north of South Fork to Creede. There is easy access to the river via highways 160 and 149. Much of the river is privately owned, but public access is excellent through numerous state leases.
SANCHEZ RESERVOIR SWA: Quality-sized yellow perch and trophy northern pike dominate the catch at this cool-water reservoir in the San Luis Valley with walleye also being caught. Fishing is best following ice melt in May and June. Popular lures include plastic jigs and crankbaits worked along the rocky shoreline. A concrete boat ramp and camping is allowed east of the boat ramp. Location: From San Luis, 3 miles east on Highway 152 to Highway 242, then 5.2 miles south. Anglers should take note of this mercury warning issued by the Colorado Department of Health and Environment.
ANIMAS RIVER: The state's newest Gold Medal water boasts many brown and rainbow trout 14-18 inches. Be aware of where you fish near Durango as there are restrictions and some private land. This river is best fished after snowmelt, from mid-April to June. Location: Take Highway 160 to Highway 550 to a stretch of the Animas River near Durango.
TAYLOR RIVER AND RESERVOIR: Excellent rainbow and brown trout fishing is available in the tailwater below Taylor Park Dam where some of the largest rainbows in the state can be found. Rainbows 10-14 inches are common. Trophy lake trout and northern pike are often caught, especially in May and June. Some opportunity exists for brown trout and kokanee salmon. Location: Northeast of Almont on Highway 742.