Reservoir · Iowa · United States · USACE CWMS
Saylorville Lake Reservoir
96.8% full
Capacity
91.28 hm³
Volume stored
88 hm³
Coordinates
41.704°N, 93.689°W
Last updated
2026-10-28
Current fill
96.8%vs 7 days ago
+2.2 ppgaining
vs 1 year ago
N/A7-day trend
↑rising
Drought context
Drought Monitor at this site · 20 October 2026
Nonenot in a drought category
Saylorville Lake Reservoir's coordinates fall outside every category on the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Iowa drought figures →
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.704°N, 93.689°W · Open in Google Maps
About Saylorville Lake Reservoir
As of October 28, 2026, Saylorville Lake Reservoir is filled to 96.8% of its total capacity, holding 88.4 hm³ of water out of a maximum 91.28 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 2.2 percentage points.
Across the readings we hold for Saylorville Lake Reservoir — 92 data points between July 27, 2026 and October 28, 2026 — the level has ranged from a low of 87.8% (August 20, 2026) to a high of 102.8% (October 4, 2026).
It is operated by USACE primarily for multiple purposes. It is at 41.704°N, 93.689°W.
Key facts
- Current fill level
- 96.8% of total capacity
- Water stored
- 88.4 hm³
- Total capacity
- 91.28 hm³
- 7-day change
- ▲ 2.2 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 41.704°N, 93.689°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 96.8% | 88.4 |
| 27 Oct 2026 | 96.6% | 88.2 |
| 26 Oct 2026 | 94.3% | 86.06 |
| 25 Oct 2026 | 95.4% | 87.09 |
| 24 Oct 2026 | 98.3% | 89.73 |
| 23 Oct 2026 | 100.6% | 91.82 |
| 22 Oct 2026 | 95.9% | 87.55 |
| 21 Oct 2026 | 94.6% | 86.38 |
| 20 Oct 2026 | 94.1% | 85.93 |
| 19 Oct 2026 | 94.4% | 86.19 |
| 18 Oct 2026 | 95.3% | 87.03 |
| 17 Oct 2026 | 96.5% | 88.07 |