UPDATE: Starting in 2022, reservoir expansion is underway. Click here for updated post on Gross Reservoir recreation during construction.
Gross Reservoir is a great metro-area paddling destination in the foothills above Boulder. The lake is non-motorized and is popular with kayaks and duckies as well as stand-up paddleboards. It is also quite deep (max ~300 feet) and graced by steep, forested slopes around much of its shoreline.
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Gross Reservoir |
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South Boulder Creek Arm |
Gross Reservoir is an appealing destination because it's reasonably close to Front Rnage population centers, and has winding inlets and coves that offer protection from winds. It can be accessed via Highway 72 from Golden/Denver or via Flagstaff Road from Boulder. Gross Dam Road, which is connects the two accesses, is gravel but can be mildly washboardy in places. Osprey point, the southernmost access point, is probably the most desirable because it offers the best access to the South Boulder Creek arm of the lake. On summer weekends, Osprey Point may fill up early. The South Shore access point is near the dam and has fewer shoreline features and more open water exposure to wind.
Location info [key]:
Scenery: 4
Shoreline Interest: 4
Non-motorized
Use: High
Fee: None
Access: Gravel
Full elev = 7282; Best near full, significant drawdown possible