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South Dakota

Angostura Reservoir

In Fall River County, South Dakota, Angostura Reservoir offers a 4,753-acre largemouth water where seasonal forage and weather drive the bite.

Surface
4,753acres
Primary species
Largemouth
§ 01Today on the water · Angostura Reservoirvia Open-Meteo · 02:45 local
Air temp
85.1°F
Barometric
29.78″
→steady 24h(+0.04)
Wind
10mph
from NE
Moon
Waxing Crescent
day 4.0 · 17% lit

Air conditions sampled near the lake center, not measured on the water · refreshed ~15 min

§ 03Next 3 daysvia Open-Meteo · interpretation
  1. 17
    julFri

    Watch the wind

    hi 96° · lo 68°

    Lean into wind-fed shorelines, all day. Wind drives bait position today; pick the shoreline taking it.

    ── stiff ne wind

  2. 18
    julSat

    Tougher window

    hi 98° · lo 70°

    Pick the calmest hour and stay flexible. Conditions push hard today; bite likely shrinks. Plan around the calmest gap.

    ── strong ne wind · bite likely shrinks

  3. 19
    julSun

    Watch the wind

    hi 104° · lo 73°

    Lean into wind-fed shorelines, all day. Wind drives bait position today; pick the shoreline taking it.

    ── stiff e wind

§ 04Field notesSouth Dakota

Where it is

Angostura Reservoir sits in Fall River County, South Dakota, covering about 4,753 acres. The fish move with the calendar, and the productive water moves with the fish.

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

Panfish and resident baitfish form the forage on Angostura Reservoir; bass cycle through cover as those schools shift.

Access

Boating access to Angostura Reservoir is public; check ramps, water levels, and any seasonal closures before going.

Regulations

Check current state and local regulations before fishing; limits and seasons can change.

§ 05Sources & field guides

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:01261191). 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

Last revised · Back to Lake Guide