Reservoir · Iowa · United States · USACE CWMS
Coralville Lake Reservoir MET Station
102.6% full
Capacity
34.66 hm³
Volume stored
36 hm³
Coordinates
41.725°N, 91.528°W
Last updated
2026-05-27
Current fill
102.6%vs 7 days ago
+0.5%gaining
vs 1 year ago
+5.5%year-over-year
7-day trend
→stable
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: 2026-05-27.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.725, -91.528 · Open in Google Maps
About Coralville Lake Reservoir MET Station
As of May 27, 2026, Coralville Lake Reservoir MET Station is filled to 102.6% of its total capacity, holding roughly 36 hm³ of water out of a maximum 35 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (+0.5 pts), and it is 5.5 points above its level on the same date a year earlier.
Across the readings we hold for Coralville Lake Reservoir MET Station — 210 data points between June 13, 2021 and May 27, 2026 — the level has ranged from a low of 73.1% (March 8, 2026) to a high of 105.0% (September 12, 2021). On average the reservoir is fullest around September and at its lowest around April.
It is operated by USACE primarily for multiple purposes. It lies within the Iowa basin at 41.725°N, 91.528°W.
Key facts
- Current fill level
- 102.6%
- Water stored
- 36 hm³
- Total capacity
- 35 hm³
- 7-day change
- ▲ 0.5 pts
- Year-on-year
- ▲ 5.5 pts
- Primary use
- Multipurpose
- River basin
- Iowa
- Operator
- USACE
- Coordinates
- 41.725°N, 91.528°W
- Last updated
- May 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 May 2026 | 102.6% | 36 |
| 26 May 2026 | 102.1% | 35 |
| 25 May 2026 | 101.4% | 35 |
| 24 May 2026 | 105.0% | 36 |
| 23 May 2026 | 105.0% | 38 |
| 22 May 2026 | 105.0% | 37 |
| 21 May 2026 | 105.0% | 37 |
| 20 May 2026 | 105.0% | 37 |
| 19 May 2026 | 105.0% | 37 |
| 18 May 2026 | 105.0% | 37 |
| 17 May 2026 | 103.9% | 36 |
| 16 May 2026 | 101.7% | 35 |
Frequently asked questions
What is the current water level of Coralville Lake Reservoir MET Station?
As of May 27, 2026, Coralville Lake Reservoir MET Station is at 102.6% of its capacity, holding approximately 36 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Coralville Lake Reservoir MET Station reservoir full?
Coralville Lake Reservoir MET Station is essentially full, sitting at 102.6% of capacity as of May 27, 2026.
Is the water level at Coralville Lake Reservoir MET Station rising or falling?
The level at Coralville Lake Reservoir MET Station has been broadly stable over the latest week on record (+0.5 points).
How much water can Coralville Lake Reservoir MET Station hold?
Coralville Lake Reservoir MET Station has a total capacity of 35 hm³.
Where is Coralville Lake Reservoir MET Station reservoir located?
Coralville Lake Reservoir MET Station is located in Iowa, United States, within the Iowa basin (coordinates 41.725°N, 91.528°W).
What is Coralville Lake Reservoir MET Station used for?
Coralville Lake Reservoir MET Station is used primarily for multiple purposes, and is managed by USACE.