Great Lakes
Au Sable South Branch
Live Conditions
Au Sable South Branch — South Branch Au Sable near Luzerne, MI
7-Day Flow
↓ Falling
24-Hr Pressure
29.14 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
🌤️Partly cloudy
73° / 42°
Tomorrow
☀️Clear sky
78° / 39°
Wed
☁️Overcast
81° / 48°
Thu
☁️Overcast
79° / 51°
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 Au Sable South Branch.
7.8
Time of Day
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Au Sable South Branch conditions.
🪰 Hatch Calendar
Au Sable South Branch · June · Early Summer
🟢 Active now at 66.2°F water
Select month
SULPHURS at peak (size 16-18) evenings. Caddis (size 14-16). Light Cahills emerging. Late month: HEX hatch begins.
🟢 Active · 🟡 Approaching · ⚪ Seasonal only
River Map
About Au Sable South Branch
The South Branch of the Au Sable flows through the Oscoda County State Forest in a deep, remote valley. Wild brown and brook trout inhabit its cold, clear water. The Chase Bridge area is a classic access point. The South Branch carries the Hex hatch and excellent caddis action through the summer months.
Regulations
Gear Restricted sections present. Verify Crawford/Roscommon County exceptions in current Michigan DNR Inland Trout & Salmon Regulation Guide. Michigan Fishing License required. Season opens last Saturday of April.