Sheme of the design disharge of intakes |
 | Quaternary aquifer Q fg sands |  | Gdov aquifer PR gd sandstones |
Precambrian aquifers |
 | Ladoga series PR ld schists, volcanics |  | Sumian-Sariolian series pr sm-sr schists, conglomarates, volcanics |
 | Jatulian series PR jt quartzites, carbonate rocks, volcanics |  | Lopian series ar lp gneiss-granites |
