Where is Mariano Reservoir?

Mariano Reservoir is a lake in Larimer County, Colorado. Its water-quality measurements are published by Colorado WQCD and shown on this page as reported.

Are there boat ramps on Mariano Reservoir?

Mariano Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Boedecker Reservoir State Wildlife Area. Public access is listed as yes.

Can I fish at Mariano Reservoir?

Mariano Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Colorado's fish and wildlife agency, so check its current regulations before you go.

Mariano Reservoir

Larimer County, Colorado376 acresView map Directions

No nutrient or algae sampling on record from Colorado WQCD for this lake.

Area

376 acres

Surface area

Shoreline

3.8 mi

Measured length

Public access

See the measurements Directions Where to stay

Mariano Reservoir in Larimer County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Surface area: 376 acres.

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Mariano Reservoir is a 376-acre lake in Larimer County, Colorado. Limited fish-species data available. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, CDPHE. Methodology: how these readings are compared.

What Mariano Reservoir is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Mariano Reservoir is safe to swim in today is a call for the Water Quality Control Division of the Colorado Department of Public Health and Environment and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Mariano Reservoir

These are the measurements Colorado WQCD publishes for Mariano Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. TSI undefined.

Ask about Mariano Reservoir

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

376 acres

Shoreline

3.8 mi

Public access

Yes

Listed by Colorado WQCD

No bathymetric survey has been published for Mariano Reservoir, so its depth is not documented here.

Recreation & Access

Boat Landings

Yes

Public Access

Boedecker Reservoir State Wildlife AreaPublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays near Mariano Reservoir

Compare lakeside cabins, hotels, and vacation rentals near Mariano Reservoir in Larimer County, Colorado — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Mariano Reservoir

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Fishing Mariano Reservoir

→ Mariano Reservoir fishing regulations (limits, seasons, special rules)

Nearby Lakes in Larimer County

George Rist Reservoir0.6 miView →Lon Hagler Reservoir4.6 ft clear · Mesotrophic1.6 miView →Rist Benson Reservoir2.1 miView →South Side Reservoir2.2 miView →Ryan Gulch Reservoir2.2 miView →Lonetree Reservoir3.5 miView →

Frequently asked questions about Mariano Reservoir

Where is Mariano Reservoir?: Mariano Reservoir is a lake in Larimer County, Colorado. Its water-quality measurements are published by Colorado WQCD and shown on this page as reported.
What is the water quality of Mariano Reservoir?: Mariano Reservoir in Larimer County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Surface area: 376 acres.
Is Mariano Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Mariano Reservoir?: Mariano Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Boedecker Reservoir State Wildlife Area. Public access is listed as yes.
Can I fish at Mariano Reservoir?: Mariano Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Colorado's fish and wildlife agency, so check its current regulations before you go.