What flies are hatching on the Catoctin Creek right now?

Current and seasonal hatches on the Catoctin Creek include Hendrickson, Caddis, Sulphur. Use the AI Hatch Advisor on this page for a live, temperature-aware recommendation.

What's the current flow on the Catoctin Creek?

The Catoctin Creek is running at 18.6 CFS at the Near Middletown gauge. Readings update every 15 minutes from the USGS Water Services API.

Is the Catoctin Creek fishable today?

Catoctin Creek is outside its fishable window right now. Flow is 18.6 CFS at the Near Middletown gauge. Check back when conditions return to the normal range.

Northeast

Catoctin Creek

Unfishable18.6 CFSBeginner

Live Conditions

Catoctin Creek — Near Middletown

Unfishable

18.6CFS

Discharge

1.69ft

Gauge Height

—

Water Temp

Updated 18 min agoView on USGS ↗

7-Day Flow

→ Stable

RisingFallingStable

24-Hr Pressure

29.36 inHg · → High/stable

Falling (good)RisingHigh/stable

Local Weather

81°FClear sky

Wind 14 mph29.36 inHg Low & stable

Tough conditions — fish deep

Today

☁️

Overcast

80° / 66°

Tomorrow

☁️

Overcast

82° / 61°

Sun

☁️

Overcast

84° / 63°

Mon

🌧️

Rain showers

84° / 68°

0.64"

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?

One call. Specific to today's exact conditions on the Catoctin Creek.

Time of Day

What should I pack?

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

🪰 Hatch Calendar

Catoctin Creek · June · Early Summer

Full calendar →

Showing typical dates — water temperature data unavailable for live hatch predictions.

Select month

JanDec

Sulphurs (size 16-18). Light Cahill. Caddis evenings. Best variety month.

Caddis

River Map

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

About Catoctin Creek

Catoctin Creek is a Potomac River tributary in Frederick County offering accessible spring trout fishing through a scenic valley along the eastern face of the Catoctin Mountains. The creek is stocked with rainbow and brown trout in the upper and mid sections, and its limestone-tinged water runs clearer and cooler than many Piedmont streams.

HendricksonCaddisSulphurLight CahillBlue-Winged Olive

Regulations

Standard Maryland statewide trout regulations apply. Trout season opens the last Saturday in March; 5-fish daily creel, 7-inch minimum. Check Maryland DNR for current stocked reaches — stocking typically concentrated in upper Frederick County sections.