Reservoir · Ashland, Middlesex, Massachusetts

Ashland Reservoir

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Ashland Reservoir

Reservoir · Massachusetts

Information Only

StrikeTracks does not currently provide a live condition rating for this destination. Destination and fishery information is still available.

Weather Near Lake

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Fishery Profile

Documented species you may encounter at Ashland Reservoir.

High confidenceLast verified: Jul 11, 2026

Species images are AI-generated illustrations for visual reference and may simplify natural variation. Fishery records are based on the cited agency sources. About fish illustrations

Fishery overview

Ashland Reservoir in Ashland State Park is a MetroWest trout and largemouth bass impoundment of Cold Spring Brook. Rainbow trout are primary in cool seasons; largemouth bass are abundant. No live USGS lake/reservoir continuous water observations are assigned; conditions rely on weather-by-coordinates.

Target species

  • Rainbow Trout

    Oncorhynchus mykiss

    Expectation
    Primary
    Population
    Stocked
    Native status
    introduced
    Confidence
    High confidence
    Stocked · Spring, FallSpring, Fall

    MassWildlife notes trout are caught especially in spring and fall; Ashland Reservoir is on Northeast District trout stocked waters.

    Source: MassWildlife

  • Largemouth Bass

    Micropterus nigricans

    Expectation
    Common
    Population
    Established
    Native status
    introduced
    Confidence
    High confidence

    MassWildlife names abundant largemouth bass at Ashland Reservoir.

    Source: MassWildlife

Fishery characteristics

Composition
Mixed wild and stocked

Ashland State Park reservoir (about 173 acres) with stocked trout and warmwater bass habitat.

Best seasons

  • Spring
  • Summer
  • Fall

Common techniques

  • Boat fishing
  • Fly fishing
  • Shore fishing
  • Spinning

Access and Public Fishing Rights

DCR manages a gravel ramp suitable for trailered and cartop boats in Ashland State Park. Confirm current park access and launch details on official DCR/MassWildlife sources.

Stocking information

Included on MassWildlife trout stocking locations. Confirm current stockings on the official MassWildlife trout stocking report.

  • Rainbow Trout

    Stocked · MassWildlife

    Stocked · Spring, Fall

Official sources

Verify current MassWildlife and DCR park rules for Ashland Reservoir before fishing.

Hatch Match

No destination-specific hatch data is currently available.

General fly suggestions

  • Midge larvaGeneral stillwater midge-style family — not a live Chironomidae Hatch claim.
  • Woolly-bugger-style streamerGeneral stillwater streamer family. Not a baitfish or kokanee Hatch event.
  • Ant or beetleGeneral shoreline terrestrial family — not a local Hatch calendar.

These are general fishing suggestions, not a report of insects currently hatching at this destination.

Location and Access

Cataloged lake location

Ashland, Middlesex, Massachusetts

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The map marker represents the cataloged waterbody or monitoring location and may not indicate legal parking or public access. Confirm access through the official information before visiting.

Lake Details

Town

Ashland

County

Middlesex

Surface Area

173 acres

Maximum Depth

50 ft

Average Depth

24 ft

Target Species

Trout, Largemouth Bass

Public Access

Public

Boat Launch

Available

Description

Impoundment of Cold Spring Brook in Ashland State Park. MassWildlife lists 173 acres, 24 ft average depth, and 50 ft maximum depth. DCR manages a gravel ramp suitable for trailered and cartop boats. Trout are caught year-round with strongest action in spring and fall; largemouth bass are abundant per MassWildlife. Included on the 2026 MassWildlife trout stocking locations list. No USGS lake monitoring station identified. Coordinates from the MassWildlife Go Fish MA fishing sites layer / Ashland Reservoir pond map reference point.