There's very good evidence for there having been interconnected rivers and lakes, but they're very immature.
When floods occurred, the floodplain was partially inundated, and the non-perennial lakes were interconnected.
Many of the subglacial lakes are interconnected by rivers and streams, and satellite measurements have revealed how great floods will sometimes lift the surface of ice sheet by several metres, only for it to then slump once the mass of water has passed through.
There is a large entrance hall, dining room and two interconnecting drawing rooms overlooking the lake.
On the east side, a dozen small lakes, drained by an interconnecting stream, flow into Smoothwater.
Moreover, there are 250 canals and lakes around Dhaka, which are well interconnected with the surrounding rivers and wetlands that facilitate the flow of flood waters through such channels into the main rivers, wetlands, and low-lying areas.
Centre for Polar Observation & Modelling glaciologists propose that many of the subglacial lakes of Antarctica are at least temporarily interconnected.
Hydrologically interconnected sites studied were Dasserat Lake (Das), Arnoux Bay (Bar) and Arnoux Lake (Lar).
The alluvial fan depositional systems, with mainly southwest and southeast source supplies, entered the lakes quickly to form fan deltas; multisource fan deltas were interconnected to form fan delta aprons distributed along the fault margins (Wang et al. 2012).
