It is a gravity dam made of concrete and connects Mount Gicovanu with Obcina Horștei, located upstream of the confluence of the stream Izvorul Muntelui with Bistrița.

Its structure consists of 30 high blocks (plots) separated by joints sealed upstream with reinforced concrete wedges and copper sheeting.

The construction has provided rooms that house drive and control installations, equipment for seismic monitoring and tracking the behavior of each element.

The water accumulated at Tașca is used both for electricity production in the "Bicaz-Stejaru" hydroelectric power plant and for supplying the cement factory in the locality or for other downstream needs.

At Potoci, a few kilometers north of the town of Bicaz, there is a biological research facility, equipped with a small submersible used for underwater exploration.