← Lake Guide41.70° N · 71.62° W

Rhode Island

Flat River Reservoir

Covering roughly 593 acres in Kent County, Rhode Island, Flat River Reservoir is a year-round largemouth water with strong seasonal swings.

Surface
593acres
Primary species
Largemouth
§ 01Today on the water · Flat River Reservoirvia Open-Meteo · 13:15 local
Air temp
74.8°F
Barometric
29.96″
↓falling 24h(-0.06)
Wind
8mph
from SSW
Moon
Waxing Crescent
day 4.0 · 17% lit

Air conditions sampled near the lake center, not measured on the water · refreshed ~15 min

§ 03Next 3 daysvia Open-Meteo · interpretation
  1. 18
    julSat

    Tougher window

    hi 81° · lo 60°

    Pick the calmest hour and stay flexible. Conditions push hard today; bite likely shrinks. Plan around the calmest gap.

    ── heavy precipitation · bite likely shrinks

  2. 19
    julSun

    Stable window

    hi 77° · lo 65°

    Anytime through the day. Quiet weather day; lean on seasonal pattern and structure.

    ── light w wind

  3. 20
    julMon

    Stable window

    hi 84° · lo 58°

    Anytime through the day. Quiet weather day; lean on seasonal pattern and structure.

    ── light sw wind · settled

§ 04Field notesRhode Island

Where it is

Flat River Reservoir sits in Kent County, Rhode Island, covering about 593 acres. Season and conditions decide the productive water; the map is the starting point.

Seasonal pattern

Spring. Warming water pulls largemouth toward shallow, protected areas where they stage and spawn; the quickest-warming pockets lead.

Summer. Heat pushes fish off the shallows toward depth and shade; work the cooler ends of the day.

Fall. As water cools, forage and bass return toward shallower water; movement is wide, so covering water pays.

Winter. Cold water settles fish deep and slow; patience and a subtle presentation are the more dependable choice.

Key structure

  • Creek and cove mouths that funnel fish and bait
  • Weed edges and the clean lines along them
  • Inside turns where a bank changes angle
  • Submerged wood, brush, and laydown cover

The calendar decides which of these is worth time on a given day.

Forage

Largemouth on Flat River Reservoir hunt baitfish and panfish along cover; forage and weather drive the day's bite.

Access

Public access points serve Flat River Reservoir; verify ramp conditions and lake levels before setting out.

Regulations

Check current state and local regulations before fishing; limits and seasons can change.

§ 05Sources & field guides

Field guides

Data & references

  • Today's conditions — Open-Meteo, refreshed every ~15 min
  • Moon phase — local astronomical calculation, no external API
  • Lake area, depth, structure — Identity, surface area, coordinates and county/state are from the ProjectD canonical waterbody index (snapshot conus-20260518-v1, group gnis:01218322). Maximum depth and regulation links were not available from an acceptable source and are intentionally omitted.
  • Regulations — verify current state and local regulations before fishing

Last revised · Back to Lake Guide