Fronhas
Coimbra · Centro · Mondego
Capacity
62 hm³
Coordinates
40.220°N, 8.067°W
Operator
RH4
68.6% full
Current fill
68.6%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 62 hm³ |
| Usable capacity | 55.8 hm³ |
| Primary use | Multi-purpose |
| Operator | RH4 |
| River | Mondego |
| Province | Coimbra |
| Autonomous community | Centro |
| River basin | Mondego |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.220, -8.067 · Open in Google Maps
About Fronhas
As of July 21, 2026, Fronhas is filled to 68.6% of its total capacity, holding roughly 43 hm³ of water out of a maximum 62 hm³. At this level the reservoir is within its normal operating range. Of that total, about 56 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for Fronhas — 1 data points between July 21, 2026 and July 21, 2026 — the level has ranged from a low of 68.6% (July 21, 2026) to a high of 68.6% (July 21, 2026).
It is operated by RH4 primarily for multiple purposes. It lies within the Mondego basin at 40.220°N, 8.067°W.
Key facts
- Current fill level
- 68.6%
- Water stored
- 43 hm³
- Total capacity
- 62 hm³
- Usable capacity
- 56 hm³
- 7-day change
- No change
- Primary use
- Multipurpose
- River
- Mondego
- River basin
- Mondego
- Operator
- RH4
- Coordinates
- 40.220°N, 8.067°W
- Last updated
- July 21, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 21 Jul 2026 | 68.6% | 43 |
Frequently asked questions
What is the current water level of Fronhas?
As of July 21, 2026, Fronhas is at 68.6% of its capacity, holding approximately 43 hm³ of water, according to SNIRH data.
Is Fronhas reservoir full?
No. As of July 21, 2026, Fronhas is within its normal operating range at 68.6% of its capacity, so it is not full.
Is the water level at Fronhas rising or falling?
The level at Fronhas has been broadly stable over the latest week on record (0.0 points).
How much water can Fronhas hold?
Fronhas has a total capacity of 62 hm³, of which about 56 hm³ is usable storage.
Where is Fronhas reservoir located?
Fronhas is located in Coimbra, Centro, Portugal, within the Mondego basin (coordinates 40.220°N, 8.067°W).
What is Fronhas used for?
Fronhas is used primarily for multiple purposes, and is managed by RH4.