Iowa
Black Hawk Lake
Black Hawk Lake totals about 914 acres in Iowa's Sac County; largemouth patterns trade depth, cover, and current through the year.
- Surface
- 914acres
- Primary species
- Largemouth
- Air temp
- 72.3°F
- Barometric
- 29.80″
- ↑rising 24h(+0.08)
- Wind
- 7mph
- from WSW
- Moon
- Full Moon
- day 18.4 · 86% lit
Air conditions sampled near the lake center, not measured on the water · refreshed ~15 min
- 31augMon
Stable window
hi 88° · lo 72°Anytime through the day. Quiet weather day; lean on seasonal pattern and structure.
── light sw wind · settled
- 1sepTue
Watch the wind
hi 88° · lo 69°Lean into wind-fed shorelines, all day. Wind drives bait position today; pick the shoreline taking it.
── direction shift overnight
- 2sepWed
Watch the wind
hi 101° · lo 64°Lean into wind-fed shorelines, all day. Wind drives bait position today; pick the shoreline taking it.
── stiff s wind
Where it is
Black Hawk Lake sits in Sac County, Iowa, covering about 914 acres. Where the largemouth sit changes with the season, not the map.
Seasonal pattern
Spring. Warming water pulls largemouth toward shallow, protected areas where they stage and spawn; the quickest-warming pockets lead.
Summer. Heat pushes fish off the shallows toward depth and shade; work the cooler ends of the day.
Fall. As water cools, forage and bass return toward shallower water; movement is wide, so covering water pays.
Winter. Cold water settles fish deep and slow; patience and a subtle presentation are the more dependable choice.
Key structure
- Creek and cove mouths that funnel fish and bait
- Weed edges and the clean lines along them
- Inside turns where a bank changes angle
- Submerged wood, brush, and laydown cover
The calendar decides which of these is worth time on a given day.
Forage
The bait on Black Hawk Lake runs to small panfish and shad-class baitfish; bass set up where those schools move.
Access
Public launches surround Black Hawk Lake; check seasonal closures, water levels, and weather before a trip.
Regulations
Check current state and local regulations before fishing; limits and seasons can change.
Field guides
Data & references
- Today's conditions — Open-Meteo, refreshed every ~15 min
- Moon phase — local astronomical calculation, no external API
- Lake area, depth, structure — Identity, surface area, coordinates and county/state are from the ProjectD canonical waterbody index (snapshot conus-20260518-v1, group gnis:00454657). Maximum depth and regulation links were not available from an acceptable source and are intentionally omitted.
- Regulations — verify current state and local regulations before fishing
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