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Washington lakes and reservoirs

Diamond Lake Fishing

A 754-acre Washington lake in Pend Oreille County.

Get driving directions

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Photo of Newman Lake: Bjorn, CC BY-SA 2.0

Pend Oreille County

Diamond Lake: what to know first

WDFW lists Diamond Lake at 754 surface acres in Pend Oreille County. The water lies at roughly 2,343 feet of elevation. Allow about 8 miles of driving to Newport, the nearest town. Management on record is mixed-species water managed with a trout emphasis. For WDFW purposes the county is in WDFW Region 1.

The access layers show 1 launch on the water, 1 of them public. Anglers on foot get 1 shore fishing site. Hatchery crews have put in 2 trout plants during 2026. Shore access, by WDFW: good.

754surface acres

2,343 ftelevation

1launches

22026 plants

WDFW Fish Washington lake layers on geodataservices.wdfw.wa.gov (surface acres, elevation, management emphasis, shoreline access, species), USGS NHD outlines, Census 2023 places, retrieved October 31, 2026.

Directions to Diamond Lake

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Species

Which fish WDFW records in Diamond Lake

The WDFW layers, records and plant report name these fish at Diamond Lake.

Rainbow trout Brown trout Largemouth bass Brown bullhead Yellow perch Black crappie Pumpkinseed

WDFW Fish Washington species layers (presence, not abundance), WDFW records and the 2026 trout plant report; retrieved October 31, 2026.

Access

WDFW and park ramps on Diamond Lake

Diamond Lake boat launch1 ramp, concrete surface, Discover Pass, Washington Department of Fish and Wildlife

Casting from land at Diamond Lake

Diamond Lake shore accessshore fishing site, Shore fishing near boat launch

Second-choice ramps close to Diamond Lake

Sacheen Lake boat launchSacheen Lake, 5 miles west
Davis Lake boat launch (east)Davis Lake, 8 miles northwest
Horseshoe Lake boat launch (east)Horseshoe Lake, 10 miles west
Marshall Lake boat launchMarshall Lake, 10 miles northeast
Fan Lake boat launchFan Lake, 11 miles southwest
Eloika Lake boat launchEloika Lake, 11 miles southwest

WDFW Water Access Sites and Shore Fishing Sites layers (geodataservices.wdfw.wa.gov) and the Washington State Parks boat launch layer, retrieved October 31, 2026. A Discover Pass is needed to park at WDFW access sites and State Parks launches.

Stocking

2026 stocking at Diamond Lake

The 2026 plant report lists 2 releases for Diamond Lake (15,184 fish), latest at the top.

DIAMOND LakeRainbow, 15,000 fish at 3 per pound, April 17, 2026, Diamond Lk Np
DIAMOND LakeRainbow, 184 fish at 0.33 per pound, April 17, 2026, Spokane Hatchery

WDFW Trout Plants report (rows January 2 to October 27, 2026), read October 31, 2026.

Washington trout plants

Limits

Taking fish home from Diamond Lake

Species	Daily limit and size	Season
Largemouth Bass	No min. size in lakes, ponds, and reservoirs. Only largemouth bass less than 12" may be retained, except 1 over 17" may be retained. Daily limit 5.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31
Smallmouth Bass	No min. size in lakes, ponds, and reservoirs. Only 1 smallmouth bass over 14" may be retained. Daily limit 10.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31
Walleye	Min. size 12" in lakes, ponds, and reservoirs. Daily limit 8. Only 1 over 22" may be retained. May be caught, retained, and released alive from a livewell until daily limit is in possession.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31
Channel Catfish	No min. size in lakes, ponds, and reservoirs. Daily limit 5.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31
Burbot (Freshwater Ling)	No min. size. Daily limit 5.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for
Crappie, Northern Pikeminnow, Peamouth Chub, Perch, Suckers, Sunfish,	No min. size. No daily limit.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31
Grass Carp	Closed unless otherwise listed in Special Rules.	Closed
Kokanee	No min. size. Daily limit 10. When fishing with bait, all kokanee that are lawful to possess and are equal to or greater than the minimum size are counted as part of the daily limit whether kept or released.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for
Tiger Muskellunge (Tiger Muskie)	Min. size 50". Daily limit 1.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for
Whitefish	No min. size. Daily limit 15.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for
Steelhead	Release all wild steelhead. Min. size 20". Daily limit 2. Open during salmon or game fish seasons unless as otherwise listed.	Open during salmon or game fish seasons unless as otherwise listed
Brown Trout, Cutthroat Trout, Rainbow Trout, Golden Trout, Tiger Trout	In lakes, ponds, and reservoirs: No min. size. Daily limit 5.	Year-round (statewide lake season, p.23)
Trout (combined rivers and lakes same day)	The combined daily limit for an angler that fishes in both rivers and lakes on the same day is 5 trout, no more than 2 may be from rivers.	see the pamphlet
Lake Trout	No min. size. No daily limit.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for
Eastern Brook Trout (EBT)	No min. size. No daily limit.	Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for
Dolly Varden/Bull Trout	Closed unless otherwise listed in Special Rules.	Closed

For Diamond Lake, read the statewide rows first and then the water-specific lines.

Anglers 16 and older need a Washington Freshwater license ($39.95 resident, $115.85 nonresident for 2026-27) or a Combination license; salmon, steelhead and sturgeon also take a catch record card.

Limits and seasons as printed in the 2026-2027 Washington Sport Fishing Rules (WDFW pamphlet, in effect July 1, 2026 to June 30, 2027), PDF page 27 (pamphlet PDF; eRegulations statewide freshwater page), read October 31, 2026.

Washington licenses and limits

Compare

Where Diamond Lake ranks among nearby water

Of the five closest Washington lakes with pages, Box Canyon Reservoir has the most surface water at 9,317 acres.

Lake	Distance	Acres	Elevation	Launches	2026 plants
Diamond Lake		754	2,343 ft	1	2
Chain Lake (Pend Oreille County)	5 miles south	77		1	0
Sacheen Lake	6 miles west	310	2,238 ft	1	0
Box Canyon Reservoir	7 miles north	9,317	2,035 ft	0	0
Davis Lake (Pend Oreille County)	8 miles northwest	148	2,182 ft	1	0
Horseshoe Lake (Pend Oreille County)	10 miles west	136	1,974 ft	1	0

WDFW Fish Washington lake layers, access layers and the 2026 trout plant report; retrieved October 31, 2026.

Nearby

Just past Diamond Lake

Other lakes in the Diamond Lake area

Chain Lake (Pend Oreille County)5 miles south
Sacheen Lake6 miles west
Box Canyon Reservoir7 miles north
Davis Lake (Pend Oreille County)8 miles northwest
Horseshoe Lake (Pend Oreille County)10 miles west

Grabbing bait and leader on the way to Diamond Lake

Eagles Landing RV Resortmarina, Cusick

Overnight bases close to Diamond Lake

Newport8 miles
Deer Park16 miles
Mead25 miles

Counties that touch Diamond Lake

Pend Oreille Countyseat: Newport

Piscifun

Rods and reels from Piscifun ahead of a trip to Diamond Lake

Piscifun and Amazon links are affiliate links; the site earns a commission on qualifying purchases.

Fish photos

Fish worth recognising before a day at Diamond Lake

Rainbow Trout, Washington — Rainbow Trout
Photo: Olympic National Park, Public domain

Brown Trout, Washington — Brown Trout
Photo: robposse, CC BY 2.0

Yellow Perch, Washington — Yellow Perch
Photo: Heath Alseike, CC BY 2.0

Black Crappie, Washington — Black Crappie
Photo: USFWS Mountain-Prairie, Public domain

Answers

Diamond Lake questions with short answers

Which Washington town is closest to Diamond Lake?

WDFW maps it in Pend Oreille County, about 8 miles from Newport.

What acreage is on file for Diamond Lake?

WDFW lists 754 acres.

Does Diamond Lake have a public ramp in the WDFW or State Parks layers?

1 launch on file; try Diamond Lake boat launch.

What can a Washington angler expect to hook in Diamond Lake?

Expect rainbow trout, brown trout, largemouth bass, brown bullhead, yellow perch, black crappie and pumpkinseed at the top of the WDFW list.

Which 2026-27 Washington rules apply on Diamond Lake?

Brown Trout, Cutthroat Trout, Rainbow Trout, Golden Trout, Tiger Trout: In lakes, ponds, and reservoirs: No min. size. Daily limit 5.; Year-round (statewide lake season, p.23).

Which WDFW license do I carry on Diamond Lake?