| Bubliai Reservoir | |
| Location: | Kėdainiai District Municipality, Lithuania |
| Coordinates: | 55.2819°N 24.0878°W |
| Inflow: | Lankesa, Obelis, Malčius II, Piltyna, Gegužinė, Aukupė, Aukupėnas |
| Outflow: | Obelis |
| Length: | 6.9km (04.3miles) |
| Width: | 0.27km (00.17miles) |
| Area: | 1.52km2 |
| Depth: | 4.2m (13.8feet) |
| Max-Depth: | 13.2m (43.3feet) |
| Volume: | 0.06438km3 |
| Shore: | 39km (24miles) |
| Elevation: | 48.4m (158.8feet) |
| Cities: | Aristava, Bubliai, Daukainiai, Aukštieji Kapliai |
| Date-Flooded: | 1980 |
| Pushpin Map: | Lithuania#Kėdainiai District Municipality |
The Bubliai Reservoir is an artificial lake in Kėdainiai District Municipality, central Lithuania. It is located east from Kėdainiai, next to Aristava village. It was created in 1980, when a dam on the Obelis river had been built next to Bubliai village. In 2002, the dam was reconstructed and a small hydroelectric plant (of 160 kW) added.
The Bubliai Reservoir is used for irrigation, fishery, and hydroelectric energy production. The fish species inhabiting the reservoir are carp, pike, catfish, roach, and bream.
Shores of the reservoir are quite straight and low. The reservoir is surrounded mostly by agriculture lands. Some other smaller ponds and reservoirs (the Kapliai Reservoir, the Piltyna Reservoir, the Aristava Reservoir) empty into the Bubliai Reservoir.
The Bubliai Reservoir itself empties into the Juodkiškiai Reservoir. The dam uses siphon spillway.