
Is Gross Reservoir Safe for Swimming?
Gross Reservoir in Boulder County, Colorado has limited nutrient and algae sampling on record. A water-quality reading is not a swimming clearance. The state water agency and county health departments post current advisories; check them before you swim.. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Maximum Depth | 298.6 ft |
| Location | Boulder County, Colorado |
How does Gross Reservoir compare?
Gross Reservoir does not have enough recent summer sampling to compare with the Colorado state average.
Stays via Stay22
Where to stay near Gross Reservoir
Compare cabins, hotels, and vacation rentals near Gross Reservoir in Boulder County, Colorado. Live availability and prices for your nights. Switch the map to Satellite to see how close each stay is to the water.
Top-rated places to stay near Gross Reservoir
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Gross Reservoir?
Get lake water-quality updates plus the best cabin & lodging deals near Gross Reservoir — straight to your inbox. No spam, unsubscribe anytime.
Watch Gross Reservoir water quality
Get an email when the clarity or algae readings change. Unsubscribe anytime.