Isabella Lake Fish Stocking
Mason County, Washington · 1995–2025 on record
According to Washington fish & wildlife agency, Isabella Lake was last stocked October 6, 2025 with Rainbow Trout. Isabella Lake has 54 stocking records on file, spanning 1995–2025, with about 731,325 fish stocked over that period.
When Isabella Lake is stocked
Isabella Lake is typically stocked year-round, most often in March — 16 stocking events in that peak month.
Angler's Field Guide
Fishing Tips & Stocking Guide for Isabella Lake
Practical advice on fish behavior, recommended tackle, and state regulations for anglers fishing in Mason County, Washington.
Post-Plant Behavior & Timing
Hatchery-raised fish are conditioned to pelleted feed and open raceways. Following a release into Isabella Lake, they typically congregate in schools near public access points, boat ramps, or inlets for the first 24 to 48 hours while adjusting to natural water conditions.
Since Isabella Lake was last stocked October 6, 2025, anglers visiting within 1 to 2 weeks of a reported event generally experience the highest activity before fish disperse into deeper cover.
State Regulations & Licensing
- •Fishing License: A valid Washington freshwater fishing license is required for anglers age 16 and older.Purchase Washington license online →
- •Official Rules & Limits: Bag limits, bait restrictions, and seasonal boundaries are set by Washington fish & wildlife agency.Official Washington regulations guidebook →
- •Ethical Conservation: Use barbless hooks and keep fish submerged in water during unhooking.Trout Thermal Advisory: When water temperatures rise above 68°F (20°C), released trout face severe mortality from thermal exhaustion. Target warmwater species or fish early in the morning when lakes and streams warm up.
Recommended Tackle & Presentations
Techniques tailored to the species stocked in Isabella Lake:
Stocked Trout Tactics
Use light 4–6 lb monofilament or fluorocarbon line. Float scented dough bait (PowerBait) 12–18" off bottom using a sliding slip-sinker rig with a size 14–16 treble hook. For active casting, throw 1/16 to 1/8 oz inline spinners (Panther Martin, Rooster Tail) or small spoons (Kastmaster) along drop-offs.
Kokanee & Salmon Tactics
Troll small dodgers followed by micro-hoochies or wedding ring spinners tipped with shoepeg corn. Use downriggers or lead-core line to reach cooler thermocline depths (typically 20–50 ft in summer).
Rainbow Trout Profile Tips
The most commonly targeted stocked trout in the country, taken on bait, spinners, and flies alike; a common first fish for new anglers.
Coho Salmon Profile Tips
A popular fall target in Washington's rivers and marine waters.
Recommended Tackle for Isabella Lake
Field-tested tackle and presentations matched to the species stocked here.
Berkley PowerBait Floating Trout Dough
Hatchery-raised trout are conditioned to pelleted scents; scented dough floated 12–18 inches off bottom consistently triggers strikes.
Panther Martin Classic Teardrop Inline Spinner
The heavy convex blade spins instantly upon retrieval, sending vibration through the water that triggers aggressive reaction bites along drop-offs.
Sliding Sinker & Treble Hook Rigging Kit
Sliding egg sinkers allow cautious trout to run with bait without feeling line drag, while size 14–16 treble hooks keep dough bait securely pinned.
Mack's Lure Classic Wedding Ring Spinner
A classic Western trolling lure designed to be tipped with shoepeg corn and run behind a dodger in deep thermoclines.
As an Amazon Associate, StockedWaters earns from qualifying purchases at no additional cost to you. Recommendations are chosen for hatchery-conditioned fish behavior and ethical rigging. We may receive a referral commission if you buy through these links. Read our editorial policy & standards.
Nearby stocked waters
Other stocked waters near Isabella Lake, freshest activity first.
Panhandle Lake
7 miMason County · 2 species · 71 records
Last stocked June 2026
Summit Lake
8 miThurston County · 3 species · 368 records
Last stocked May 2026
Lost Lake
6 miMason County · 3 species · 223 records
Last stocked May 2026
Lake Limerick
9 miMason County · 2 species · 59 records
Last stocked April 2026
Phillips Lake
9 miMason County · 2 species · 127 records
Last stocked April 2026
Island Lake
5 miMason County · 3 species · 172 records
Last stocked April 2026
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Source |
|---|---|---|---|
| October 6, 2025 | Rainbow Trout | 8,325 | Washington fish & wildlife agency |
| September 23, 2024 | Rainbow Trout | 8,320 | Washington fish & wildlife agency |
| October 2, 2023 | Rainbow Trout | 8,320 | Washington fish & wildlife agency |
| October 3, 2022 | Rainbow Trout | 8,650 | Washington fish & wildlife agency |
| October 4, 2021 | Rainbow Trout | 8,320 | Washington fish & wildlife agency |
| October 12, 2020 | Rainbow Trout | 8,400 | Washington fish & wildlife agency |
| October 1, 2019 | Rainbow Trout | 8,360 | Washington fish & wildlife agency |
| October 23, 2018 | Rainbow Trout | 8,547 | Washington fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Source |
|---|---|---|---|
| October 3, 2017 | Rainbow Trout | 1,200 | Washington fish & wildlife agency |
| October 3, 2016 | Rainbow Trout | 1,100 | Washington fish & wildlife agency |
| September 17, 2015 | Rainbow Trout | 1,207 | Washington fish & wildlife agency |
| October 19, 2010 | Rainbow Trout | 13,905 | Washington fish & wildlife agency |
| October 19, 2010 | Rainbow Trout | 1,104 | Washington fish & wildlife agency |
| May 5, 2010 | Rainbow Trout | 215 | Washington fish & wildlife agency |
| May 5, 2010 | Rainbow Trout | 1,388 | Washington fish & wildlife agency |
| October 27, 2009 | Rainbow Trout | 7,035 | Washington fish & wildlife agency |
| March 20, 2009 | Rainbow Trout | 3,002 | Washington fish & wildlife agency |
| September 22, 2008 | Rainbow Trout | 10,860 | Washington fish & wildlife agency |
| March 19, 2008 | Rainbow Trout | 3,003 | Washington fish & wildlife agency |
| July 26, 2007 | Rainbow Trout | 15,515 | Washington fish & wildlife agency |
| March 20, 2007 | Rainbow Trout | 200 | Washington fish & wildlife agency |
| March 20, 2007 | Rainbow Trout | 2,500 | Washington fish & wildlife agency |
| June 29, 2006 | Rainbow Trout | 7,595 | Washington fish & wildlife agency |
| March 14, 2006 | Rainbow Trout | 3,500 | Washington fish & wildlife agency |
| June 16, 2005 | Rainbow Trout | 44,784 | Washington fish & wildlife agency |
| March 14, 2005 | Rainbow Trout | 3,502 | Washington fish & wildlife agency |
| March 12, 2004 | Rainbow Trout | 1,032 | Washington fish & wildlife agency |
| June 18, 2003 | Rainbow Trout | 49,959 | Washington fish & wildlife agency |
| March 7, 2003 | Rainbow Trout | 4,012 | Washington fish & wildlife agency |
| November 25, 2002 | Rainbow Trout | 780 | Washington fish & wildlife agency |
| June 18, 2002 | Rainbow Trout | 32,130 | Washington fish & wildlife agency |
| March 11, 2002 | Rainbow Trout | 4,018 | Washington fish & wildlife agency |
| June 28, 2001 | Rainbow Trout | 15,400 | Washington fish & wildlife agency |
| March 22, 2001 | Rainbow Trout | 618 | Washington fish & wildlife agency |
| March 14, 2001 | Rainbow Trout | 4,033 | Washington fish & wildlife agency |
| March 8, 2000 | Rainbow Trout | 4,009 | Washington fish & wildlife agency |
| March 18, 1999 | Rainbow Trout | 3,996 | Washington fish & wildlife agency |
| July 2, 1998 | Rainbow Trout | 52,800 | Washington fish & wildlife agency |
| March 23, 1998 | Coho Salmon | 125,000 | Washington fish & wildlife agency |
| March 16, 1998 | Rainbow Trout | 4,000 | Washington fish & wildlife agency |
| October 6, 1997 | Rainbow Trout | 2,670 | Washington fish & wildlife agency |
| June 19, 1997 | Coho Salmon | 39,650 | Washington fish & wildlife agency |
| June 19, 1997 | Coho Salmon | 39,650 | Washington fish & wildlife agency |
| May 30, 1997 | Rainbow Trout | 50,016 | Washington fish & wildlife agency |
| April 25, 1997 | Rainbow Trout | 2,985 | Washington fish & wildlife agency |
| August 28, 1996 | Rainbow Trout | 2,600 | Washington fish & wildlife agency |
| May 30, 1996 | Rainbow Trout | 20,160 | Washington fish & wildlife agency |
| April 25, 1996 | Rainbow Trout | 788 | Washington fish & wildlife agency |
| March 28, 1996 | Rainbow Trout | 2,992 | Washington fish & wildlife agency |
| October 4, 1995 | Rainbow Trout | 4,689 | Washington fish & wildlife agency |
The reporting agency did not include fish sizes for this water.
Showing 50 of 54 stocking records.
Frequently asked
When was Isabella Lake last stocked?
According to Washington fish & wildlife agency, Isabella Lake was last stocked October 6, 2025 with Rainbow Trout.
What fish species are stocked in Isabella Lake?
Isabella Lake is stocked with Rainbow Trout and Coho Salmon.
What time of year is Isabella Lake stocked?
Isabella Lake is typically stocked year-round, most often in March.
How often is Isabella Lake stocked?
Isabella Lake has been stocked about 2 times a year — 54 recorded stockings between 1995 and 2025.
How many fish have been stocked in Isabella Lake?
About 731,325 fish have been stocked in Isabella Lake across 54 recorded events since 1995, per Washington fish & wildlife agency.
Do you need a fishing license to fish Isabella Lake?
Yes, all anglers age 16 and older generally need a valid Washington freshwater fishing license. Always review current regulations from Washington fish & wildlife agency for site-specific rules, bag limits, or stamps.
How do you catch stocked trout in Isabella Lake?
Freshly stocked trout in Isabella Lake typically respond well to floating dough bait (such as PowerBait) floated 12–18 inches off bottom on light 4–6 lb leader, live nightcrawlers under a bobber, and small inline spinners or spoons retrieved along shorelines and drop-offs.