What flies are hatching on the Hat Creek right now?

Current and seasonal hatches on the Hat Creek include Blue-Winged Olive. Use the AI Hatch Advisor on this page for a live, temperature-aware recommendation.

What's the current flow on the Hat Creek?

The Hat Creek is running at 111 CFS at the Hat Creek near Hat Creek (above PH2) gauge. Readings update every 15 minutes from the USGS Water Services API.

Is the Hat Creek fishable today?

Hat Creek is outside its fishable window right now. Flow is 111 CFS at the Hat Creek near Hat Creek (above PH2) gauge. Check back when conditions return to the normal range.

Hat Creek Fly Fishing Conditions

Live Conditions

Hat Creek — Hat Creek near Hat Creek (above PH2)

Unfishable

111CFS

Discharge

2.16ft

Gauge Height

50.4°F

Water Temp

Updated 1 hr agoView on USGS ↗

7-Day Flow

→ Stable

RisingFallingStable

24-Hr Pressure

26.69 inHg · → High/stable

Falling (good)RisingHigh/stable

Local Weather

77°FOvercast

Wind 13 mph26.69 inHg Low & stable

Tough conditions — fish deep

Today

☀️

Clear sky

86° / 49°

Tomorrow

☁️

Overcast

84° / 46°

Tue

☁️

Overcast

68° / 50°

Wed

☁️

Overcast

62° / 50°

Cold front incoming — go deep with nymphs, surface activity likely slow.

Weather by Open-Meteo · No API key · Updated every 30 min

What should I fish today?

⚡ AI

AI-powered recommendation using today's live flow, temperature, and hatch data.

2

Time of Day

Using: 111 CFS · 50.4°F · BWOs returning strong

What should I pack?

Rod, flies, tippet, and safety gear specific to today's Hat Creek conditions.

🪰 Hatch Calendar

Hat Creek · September · Early Fall

Full calendar →

🟢 Active now at 50.4°F water

Blue-Winged Olive

🟡 Approaching — within 5°F of trigger range

Pale Morning DunCaddisMidge

Select month

JanDec

BWOs returning strong (size 18-20). PMDs tapering. Tricos continue. Cool-morning hatches return — prime fall window.

Blue-Winged OlivePMDTrico

🟢 Active · 🟡 Approaching · ⚪ Seasonal only

River Map

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USGS Gauge (click for site ID)Fishing Access / SectionScroll to zoom disabled — use map controls

About Hat Creek

One of California's most historic fly fisheries, Hat Creek's wild trout section below Powerhouse 2 (PH2) is the birthplace of the state's Wild Trout Program. The lower 3.2 miles from PH2 to Lake Britton offer spring-creek-style fishing for wild rainbows and browns in weedy chalk-stream pools and riffles. Fly fishing only, catch-and-release only. The gauge upstream of PH2 reflects natural creek flow; actual wild-section flows are controlled by PG&E powerhouse releases from PH2.

Pale Morning DunBlue-Winged OliveCaddisMidgeTrico

Regulations

Wild Trout Program waters. Lower 3.2-mile section (PH2 to Lake Britton): fly fishing ONLY, artificial flies only, single barbless hook, catch-and-release ONLY. Upper Hat Creek above PH2: general season regulations apply. California Sport Fishing License required. Note: gauge 11355500 is above PH2 — powerhouse output controls wild-section flows, not upstream creek flow.

Learn More

Guides to help you fish Hat Creek with more confidence.