What to Expect at West Medical Lake

West Medical Lake is a shallow, weedy reservoir in Grant County, Washington, roughly 30 miles south of Spokane near the town of Medical Lake. The lake covers about 200 acres and rarely exceeds 30 feet deep — most of it is 10 to 20 feet. The water is murky and productive, choked with aquatic vegetation that makes it ideal for largemouth bass and panfish but challenging for sight-fishing or using light tackle.

The lake sits in semi-arid terrain with sagebrush and grassland around it. Access is straightforward: a public boat launch on the north shore, a few informal bank-fishing spots, and minimal development. The reservoir is managed by the Washington Department of Fish and Wildlife (WDFW) and is open year-round, though winter conditions can be harsh and the lake can ice over.

This is a working fishery, not a scenic destination. You come here for fish, not views. The payoff is consistent action — West Medical Lake holds plenty of largemouth bass and bluegill, and the weeds mean you can catch fish in shallow water from spring through fall without needing a boat.

Key Takeaways

  • West Medical Lake holds largemouth bass and panfish (bluegill, crappie) in shallow, weedy water that fishes best from spring through early fall.
  • A public boat launch on the north shore provides the main access; bank fishing is possible but limited by vegetation and private property.
  • Largemouth bass average 12 to 16 inches, with occasional fish to 18 inches; panfish are plentiful but small (6 to 9 inches).
  • You need a Washington fishing license and must follow WDFW regulations, including a two-fish daily limit on largemouth bass (12-inch minimum).
  • Weed-heavy conditions mean spinnerbaits, soft plastics, and topwater lures outperform traditional casting; live bait works but gets tangled.

Species and Seasonal Patterns

Largemouth bass are the primary target. They spawn in April and May in the shallows, making that the peak season for sight-fishing and topwater action. Summer (June through August) pushes bass deeper into weed beds and channels; early morning and late evening are most productive. Fall (September through October) brings another strong bite as water cools and bass move back to shallower structure. Winter fishing is possible but slow; the lake can ice over by December.

Panfish — bluegill and black crappie — are abundant and bite year-round. Bluegill school in shallow weeds and respond well to small jigs, crickets, and worms. Crappie are deeper and more seasonal, concentrating around submerged wood and vegetation. Neither species grows large here; expect 6 to 9 inches on average, with occasional bluegill to 10 inches.

The weed growth is heaviest in July and August, which can make fishing difficult but also concentrates fish. By October, plants begin to die back, opening up water and making November and early December surprisingly productive before cold weather sets in.

Access and Launch Information

The primary public access is the West Medical Lake boat launch on the north shore, managed by Grant County. The launch is a single-lane concrete ramp suitable for small to medium boats. There is a small parking area (roughly 10 to 15 spaces) and a vault toilet. No fuel, food, or supplies are available on-site; the nearest town is Medical Lake, about 5 miles away.

Bank fishing is limited. The north shore near the launch has a few informal spots, but much of the shoreline is private property or inaccessible due to vegetation. If you plan to fish from shore, scout the area before committing; wading is difficult because of the soft bottom and weeds.

To reach the launch from Spokane, take I-90 west toward Medical Lake, then follow local roads south. GPS coordinates for the launch are approximately 47.56°N, 117.42°W. The road is paved and passable year-round, though winter snow can make access slow.

Regulations and Licensing

Washington state requires a freshwater fishing license for anyone 16 and older. You can purchase a one-day, three-day, or annual license through the WDFW website or at sporting goods retailers. The license is inexpensive (roughly $15 to $20 for a one-day pass) and is mandatory.

West Medical Lake has specific rules set by WDFW. Largemouth bass have a two-fish daily limit with a 12-inch minimum length. Panfish (bluegill and crappie combined) have a 25-fish daily limit with no minimum size. Catch-and-release is always allowed. Check the current WDFW regulations before you go, as rules can change; the WDFW website has a searchable guide by water body.

No motorized boats are allowed on West Medical Lake — only electric motors or hand-propelled craft (canoes, kayaks, rowboats). This restriction keeps the lake quiet and protects the fishery.

Tackle and Technique

The heavy vegetation demands weed-tolerant lures. Spinnerbaits (1/4 to 3/8 ounce) are the workhorse here — they helicopter through weeds and create vibration that bass respond to in murky water. Soft plastics (4 to 6-inch worms or crawdads rigged Texas-style) work well and can be worked slowly through dense cover. Topwater lures (poppers, walking baits) are effective in spring and early morning when bass are shallow.

Live bait — shiners, crawdads, or worms — will catch fish, but the weeds tangle line and hooks constantly. If you use live bait, expect to lose tackle and spend time clearing vegetation. Many anglers find artificial lures more efficient here.

For panfish, small jigs (1/16 to 1/8 ounce) tipped with crickets or worms work best. Cast near weed edges and let the jig drop slowly. Bluegill bite aggressively; crappie require more patience and a slower presentation.

When to Fish and Weather Considerations

Spring (April through May) is peak season. Water temperatures climb into the 50s and 60s, bass move to shallows to spawn, and topwater action is consistent. Mornings are best, but you can catch fish all day.

Summer (June through August) is productive but requires more effort. Fish deeper structure and weed lines, focus on early morning (before 9 a.m.) and evening (after 6 p.m.), and be prepared for afternoon heat. The lake is shallow, so water warms quickly and fish become lethargic by midday.

Fall (September through October) brings another strong bite as water cools. Bass move back to shallower areas, and you can fish throughout the day. This is an underrated season at West Medical Lake.

Winter is slow and unpredictable. The lake can ice over by December, and fishing through ice requires a separate license endorsement. Most anglers skip winter here and return in spring.

Nearby Alternatives and Comparison

If West Medical Lake is too weedy or crowded, East Medical Lake (the larger of the two Medical Lakes, about 5 miles away) offers similar species but deeper water and less vegetation. East Medical is better for trolling and deeper presentations.

Sprague Lake, about 20 miles south, is larger and holds walleye, pike, and bass. It is more developed and busier but offers more variety if you want to explore beyond largemouth bass.

Soap Lake, roughly 40 miles south, is a unique alkaline lake with different fish populations and a resort town atmosphere. It is worth a day trip if you want a change of pace.

For most anglers targeting largemouth bass and panfish in a quiet, accessible setting, West Medical Lake is the better choice. The weeds are a feature, not a bug — they hold fish and keep crowds down.

Frequently Asked Questions

Can I fish West Medical Lake without a boat?

Yes, but it is limited. Bank access is available near the launch on the north shore, and wading is possible in shallow areas, though the soft bottom and weeds make it difficult. Most productive fishing requires a boat or kayak to reach deeper weed lines and channels. If you do not have a boat, consider renting a kayak or canoe from a nearby outfitter in Medical Lake.

What is the best time of year to fish here?

Spring (April and May) is peak season for largemouth bass, with consistent topwater action and spawning fish in shallows. Fall (September and October) is underrated and offers strong fishing with cooler water and less weed growth. Summer is productive but requires early morning or evening fishing. Winter is slow and the lake may ice over.

Do I need a special license to fish here?

You need a standard Washington freshwater fishing license (available for one day, three days, or annually). No special endorsement is required for West Medical Lake. Check the WDFW website for current regulations and license prices before you go.

Are there size restrictions on bass?

Yes. Largemouth bass have a 12-inch minimum length and a two-fish daily limit. Panfish (bluegill and crappie combined) have a 25-fish daily limit with no minimum size. These rules are set by WDFW and can change, so verify before fishing.

Can I use a gas motor on West Medical Lake?

No. Only electric motors or hand-propelled craft (kayaks, canoes, rowboats) are allowed. This restriction keeps the lake quiet and protects the fishery. If you have a gas boat, you will need to use a different lake or rent an electric-motor boat locally.