Unit Blakely
San Juan Island compact terrain with dense forest, moderate water, and minimal road access.
Hunter's Brief
Blakely Island is a smaller San Juan Island unit characterized by dense timber covering rolling terrain that rarely exceeds 1,000 feet. The island landscape transitions between forested slopes and rocky shoreline, with Horseshoe Lake and Spencer Lake providing reliable freshwater. Road access is severely limited, making this a foot-traffic unit where navigation relies on understanding drainage patterns and ridge systems. The moderate terrain complexity rewards familiarity with the country.
- Compact: under 200 sq mi
- Moderate: 200 - 800 sq mi
- Vast: over 800 sq mi
- Few: under 25%
- Some: 25 - 60%
- Most: over 60%
- Flat: under 20% mountains
- Rolling: 20 - 55%
- Steep: over 55%
- Sparse: under 20%
- Moderate: 20 - 50%
- Dense: over 50%
- Limited: under 0.3% area
- Moderate: 0.3 - 2% area
- Abundant: over 2% area
Hunt Schedule
1 huntTerrain Deep Dive
Landmarks & Navigation
Blakely Peak serves as the island's high point and primary navigation landmark, providing orientation from multiple approaches. Bald Bluff offers coastal vantage points useful for glassing and understanding shoreline terrain. Horseshoe Lake and Spencer Lake anchor the island's water resources and provide reference points for route planning.
These freshwater features concentrate wildlife movement patterns, making them strategic focal points during any season. The rocky shoreline creates distinct boundary reference that helps maintain position awareness across the densely forested interior. Limited road network means landmarks become essential for route-finding and understanding terrain relationships.
Elevation & Habitat
The terrain spans from sea level to just over 1,000 feet at Blakely Peak, with the median elevation around 500 feet. Dense forest dominates the landscape, typical of Pacific Northwest island ecology with mixed conifer and deciduous cover. Lower elevations feature heavier timber density near drainages and sheltered valleys, transitioning to slightly more open forest on upper slopes.
The rolling topography creates natural pockets of habitat diversity—thick stands alternate with more open understory where sun penetration increases browse availability. This dense-to-moderate forest structure supports the species present throughout the year without significant seasonal elevation migration.
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No maintained road system exists on Blakely Island, making this an entirely foot-traffic unit. Access depends entirely on marine transportation to island launching points, creating a significant barrier to casual hunting pressure. Once ashore, hunters navigate on foot through dense forest using natural drainages and ridge systems.
The island's compact size means thorough reconnaissance is achievable but requires time investment and navigation skill. Limited access paradoxically creates both low pressure and navigation challenges—few hunters visit, but the island's small area requires careful planning to avoid inefficient travel. Anchoring logistics and marine access conditions directly influence hunting feasibility.
Boundaries & Context
Blakely Island comprises the entire unit boundary, surrounded by saltwater on all sides. Access to the island requires marine transportation from the nearest mainland or other San Juan Islands. The island sits within the broader San Juan archipelago, positioned between larger islands and the Puget Sound region.
The compact size and island isolation create distinct access constraints compared to mainland units. The populated place of Thatcher and scattered private holdings require hunters to identify legal access points carefully. Overall, Blakely represents a contained, self-contained hunting geography with clear perimeter boundaries.
Water & Drainages
Horseshoe Lake and Spencer Lake represent the primary reliable freshwater sources on the island, both moderate in size and accessibility. Seasonal creeks and springs feed these lakes, providing secondary water sources during rainfall periods. The island's rolling terrain creates numerous small drainage systems that flow toward the saltwater perimeter, carving natural travel corridors through the forest.
Water reliability moderately supports hunting operations, with lake-based camps viable but requiring some water management planning. Spring and fall typically bring increased water flow in drainages, improving connectivity between reliable sources. Understanding drainage patterns is critical for efficient island movement.
Hunting Strategy
Blakely supports black bear and mountain lion populations within its dense forest habitat. Bear hunting focuses on early season movement in open understory areas and along the lake margins where food sources concentrate. Mountain lions utilize the thick timber as cover, making careful stalking through drainages and ridge systems necessary.
Spring and fall seasons typically offer best movement patterns across the island. The lack of road access means hunters should plan multi-day trips, establishing base camps near reliable water sources like the lakes. Success depends on thorough island knowledge, patience with slow foot travel through dense timber, and understanding how drainage systems funnel wildlife movement across this compact terrain.
Weather & Conditions
?Historical normals, not a forecast
Built from 10 years of NASA POWER data (MERRA-2 satellite reanalysis) at this unit's location.
Temperatures and conditions below reflect the unit's dominant elevation band (500 ft — 100% of unit area).
For elevation-by-elevation detail and live planning tools, use the TAGZ app.
- Daytime high / Overnight low — median daily maximum and minimum for each day of the year.
- Shaded band — the 10th–90th percentile spread across years.
- Freeze line — 32 °F reference for frost & snow risk.
Year-round temperature
Moon phase
?Illumination for each night of the selected two weeks, computed from lunar ephemeris. New and full moons are emphasised — useful for planning around moonlight.Typical conditions
?A snapshot of the selected two weeks, from long-run daily normals at the unit's dominant elevation.
- Day / night — median daytime high & overnight low; the sub-line is the typical 10th–90th percentile spread across years.
- Wet days — days with measurable precipitation (≥ 1 mm, WMO standard). Not a forecast.