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Washington

Potholes Reservoir

Tucked into Grant County, Washington, Potholes Reservoir is a 14,292-acre reservoir where largemouth move with cover, baitfish, and weather.

Surface
14,292acres
Primary species
Largemouth
§ 01Today on the water · Potholes Reservoirvia Open-Meteo · 13:45 local
Air temp
59.0°F
Barometric
29.70″
↓falling 24h(-0.24)
Wind
8mph
from NNE
Moon
Waning Gibbous
day 19.4 · 77% lit

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

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

    Stable window

    hi 84° · lo 57°

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

    ── light w wind · settled

  2. 2
    sepWed

    Tougher window

    hi 72° · lo 58°

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

    ── strong sw wind · bite likely shrinks

  3. 3
    sepThu

    Stable window

    hi 74° · lo 52°

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

    ── light se wind

§ 04Field notesWashington

Where it is

Potholes Reservoir sits in Grant County, Washington, covering about 14,292 acres. Productive zones shift through the year more than the lake outline suggests.

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 Potholes Reservoir hunt baitfish and panfish along cover; forage and weather drive the day's bite.

Access

Public access points serve Potholes 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:01513187). 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