Mountain West
Castle Creek
Live Conditions
Castle Creek — Castle Creek above Deerfield Reservoir, SD
7-Day Flow
↑ Rising
24-Hr Pressure
24.31 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
🌫️Foggy
63° / 41°
Tomorrow
☁️Overcast
70° / 50°
Wed
☁️Overcast
73° / 51°
Thu
🌧️Rain showers
77° / 51°
0.32"
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 Castle Creek.
9
Time of Day
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Castle Creek conditions.
🪰 Hatch Calendar
Castle Creek · June · Early Summer
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
Caddis, Terrestrials begin
River Map
About Castle Creek
A remote and lightly pressured Black Hills stream draining the Castle Creek drainage near Hill City. Castle Creek is one of the quieter gems in the Black Hills system — dam-influenced flows from Deerfield Reservoir stabilize conditions in the lower sections, while the upper creek retains wild freestone character. Access requires more effort than Spearfish or Rapid Creek, which keeps crowds thin and fish less educated.
Regulations
South Dakota Fishing License required. Trout limit: 5 fish, 8-inch minimum. Check SD GFP for any Deerfield Reservoir tailwater special regulations.