Reservoir · Nebraska · United States · USGS NWIS
Harlan County Lake Near Republican City, Nebr.
50.0% full
Capacity
404.09 hm³
Volume stored
202 hm³
Coordinates
40.072°N, 99.212°W
Last updated
2026-09-13
Current fill
50.0%vs 7 days ago
-0.6%losing
vs 1 year ago
-6.8%year-over-year
7-day trend
→stable
Data source: USGS National Water Information System (NWIS) — 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: 2026-09-13.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.072, -99.212 · Open in Google Maps
About Harlan County Lake Near Republican City, Nebr.
As of September 13, 2026, Harlan County Lake Near Republican City, Nebr. is filled to 50.0% of its total capacity, holding roughly 202 hm³ of water out of a maximum 404 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts), and it is 6.8 points below its level on the same date a year earlier.
Across the readings we hold for Harlan County Lake Near Republican City, Nebr. — 1460 data points between September 14, 2022 and September 13, 2026 — the level has ranged from a low of 50.0% (September 13, 2026) to a high of 84.8% (June 18, 2024). On average the reservoir is fullest around June and at its lowest around September.
It is operated by USGS primarily for multiple purposes. It lies within the Nebraska basin at 40.072°N, 99.212°W.
Key facts
- Current fill level
- 50.0%
- Water stored
- 202 hm³
- Total capacity
- 404 hm³
- 7-day change
- ▼ 0.6 pts
- Year-on-year
- ▼ 6.8 pts
- Primary use
- Multipurpose
- River basin
- Nebraska
- Operator
- USGS
- Coordinates
- 40.072°N, 99.212°W
- Last updated
- September 13, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 13 Sep 2026 | 50.0% | 202 |
| 12 Sep 2026 | 50.1% | 203 |
| 11 Sep 2026 | 50.2% | 203 |
| 10 Sep 2026 | 50.2% | 203 |
| 9 Sep 2026 | 50.3% | 203 |
| 8 Sep 2026 | 50.3% | 203 |
| 7 Sep 2026 | 50.5% | 204 |
| 6 Sep 2026 | 50.6% | 205 |
| 5 Sep 2026 | 50.6% | 205 |
| 4 Sep 2026 | 50.7% | 205 |
| 3 Sep 2026 | 50.8% | 205 |
| 2 Sep 2026 | 50.9% | 206 |