Yakhrobolskoe, Protected lake in Yaroslavl Oblast, Russia.

Yakhrobolskoe Lake is a floodplain lake in Krasny Profintern rural settlement, northern Nekrasovsky District, Yaroslavl Oblast. It covers 370 hectares, reaches 2.0 m deep, and ranks fourth among the region's largest lakes. The Rybinka River flows out, while the Sokhma, Isady and Voroksha flow in; a channel links it to Lake Shachebolskoe.

The lake is of floodplain origin. On 18 April 1975, a regional landscape nature monument of 486.3 ha was created around Lakes Yakhrobolskoye, Isadskoye and Shachebolskoye to protect the shoreline landscape, waterfowl and fish spawning and feeding grounds.

The name Yakhrobol comes from the Merian language: "yakhro" means lake and "bol" means village. Two villages stand on the shore, Isady at the north-western bank and Yakhrobol on the northern bank. The lake is also known for its sapropel, the largest deposits of this bottom sediment in Nekrasovsky District.

The lake lies in the Krasny Profintern rural settlement in the north of Nekrasovsky District; the villages of Isady and Yakhrobol stand on its northwestern and northern shores. A drainage ditch network and a pumping station at the mouth of the Rybinka keep water levels down, and the shallow depth of at most 2 m suits small boats. Mosquitoes are heavy in summer.

The lake bed holds the largest sapropel reserves in Nekrasovsky District, accumulated through ongoing sedimentation. Because the lake lies within an engineering protection zone, a network of drainage ditches and a pumping station at the mouth of the Rybinka River keep excess water in check.