Troutline

Putah Creek

California·Northern California·38.51° N, 122.08° W

Putah Creek is a tailwater below Monticello Dam on Lake Berryessa, flowing about six miles through an oak-studded canyon before pooling into Lake Solano. The interdam reach holds wild coastal rainbow trout with genetics tracing back to the steelhead that once ran this creek before the dam went in during 1957. These fish are distinctively colored -- copper-hued bodies, oversized spots, and crimson flanks from cheek to tail. Most run 10-16 inches, but fish over 20 inches show up regularly, and a few 24-inch-plus rainbows come out each year.

The fishing is technical nymphing -- indicator rigs with small flies (sizes 18-22) on 5X-6X fluorocarbon tippet, drifted through glassy runs and weedy channels. The water is characteristically clear with alternating fast pocket water and slow, spooky flats where crawling into position isn't overkill. BWOs and midges are the year-round staples, with Spotted Sedge caddis joining from April through October. Euro nymphing has become increasingly popular, and streamers targeting sculpin-eating rainbows produce some of the creek's largest fish. Dry fly opportunities exist but are secondary to subsurface work.

Located an hour northeast of San Francisco and an hour west of Sacramento, Putah Creek is the closest quality wild trout fishery to the Bay Area. Five county-managed fishing access points line Highway 128 between Winters and the dam. The creek earned Wild Trout Water designation from CDFW in 2014, and it's been catch-and-release with barbless hooks since 2008. Guides and locals observe a voluntary spawning closure from December through February -- the fish are on redds, and the community takes it seriously. Flows are dam-controlled: winter sees 60-200 CFS (prime wading), summer jumps to 400-700 CFS for agricultural releases (tough wading, fish the banks). Be aware of the New Zealand mudsnail infestation -- thoroughly clean gear before and after fishing.

Species

SpeciesAbundanceBest SeasonSizeNotes
Rainbow TroutAbundantMar-Nov10-20"Wild coastal rainbows with steelhead genetics. Distinctive copper coloring with crimson sides. Fish to 24"+ possible.
Brown TroutOccasionalSep-Nov12-20"Migrate upstream from Lake Solano in fall. Less common since Wild Trout designation in 2014.
Ideal wading flow100300 CFS
Blow-out>450 CFS
Ideal water temp5060°F

March-May for post-spawn fish feeding aggressively on BWOs and caddis at optimal wading flows (100-200 CFS). September-November for falling flows, fall BWOs, and brown trout moving up from Lake Solano. Summer has diverse hatches but high flows (400-700 CFS) make wading difficult.

Sections

3 sections on this river

Upper Interdam (Dam to Access #5)

WadeRainbow Trout

Canyon water immediately below Monticello Dam with the coldest flows on the creek. Steeper gradient with pocket water, short runs, and plunge pools over rocky substrate. Less aquatic vegetation than downstream sections.

Best for: Nymphing pocket water and streamer fishing deeper pools for rainbow trout. Cooler summer water when lower sections warm. Less fishing pressure than the popular Access #3 area.

Middle Interdam (Guide's Hole to Island Riffle)

WadeRainbow Trout

The heart of the fishery with alternating glassy flats, riffles, and deeper runs through weedy channels. Classic tailwater character with abundant aquatic vegetation. Access #3 (most popular) and Access #4 provide developed parking, restrooms, and trails to the creek.

Best for: Technical nymphing for wild rainbow trout on flats. Dry-dropper rigs in riffles. Sight fishing to rising trout during BWO and caddis hatches. Highest fish density on the creek.

Lower Interdam (Access #1 to Lake Solano)

WadeBrown Trout · Rainbow Trout

Wider, slower water transitioning toward Lake Solano with deeper pools, more vegetation, and overhanging trees. Brown trout migrate upstream from the lake in fall. Access #1 is the largest developed site with parking, restrooms, fishing platforms, and interpretive panels.

Best for: Streamer fishing for larger rainbow trout and fall brown trout. Nymphing deeper runs. More solitude than the middle section with bigger average fish.

Regulations

Current fishing rules and restrictions

Open year-round. Artificial flies and lures only. Barbless hooks required. Catch and release only (zero bag limit).

  • Artificial flies and lures only
  • Barbless hooks required
  • Catch and release only (0 bag limit)
  • Voluntary spawning closure Dec 1 - Mar 1 (community-enforced)
  • California Wild Trout Water (designated 2014)

New Zealand mudsnails are present -- thoroughly decontaminate all gear between waters. OEHHA mercury advisory for all fish from Putah Creek and Lake Solano.

Source: California DFW Freshwater Sport Fishing Regulations. Regulations change annually — verify before fishing.

Access & Logistics

Getting there, fly shops, and lodging

Getting There

Winters, CA

1 hr from Sacramento, 1.5 hrs from San Francisco, 1 hr from Napa

Fly Shops

Camping & Lodging

Lake Solano County Park has campsites. Lake Berryessa area has additional options. Winters has hotels and vacation rentals. Napa Valley lodging 30-45 minutes west.

Five Yolo County fishing access points along Highway 128 with $10 parking fee. Access #3 is the most popular. Access #2 is trail-only (no vehicle access). Valid California fishing license required.

Fishing data compiled from state wildlife agency regulations, USGS water data, NOAA, and regional fly fishing resources. Regulations change annually — always verify current rules with your state fish & wildlife agency before fishing.

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