It is suggested to assess the stages of production-macrophytic systems from the nitrogen and phosphorus compounds content of submerged macrophyte tissues.
Phytoplankton is the main producer of the organic matter in production-phytoplanktonic reservoirs.
The correlation of the properties observed in reality with potential ones calculated from morphometric peculiarities indirectly shows the type and stage belonging of a reservoir, its position in the evolution sequence, closeness to the stability threshold, the duration of the nature management optimum. The use of the above approaches to the assessment of the present conditions and future development of water objects requiring economic rehabilitation provides scientifically substantiated measures for the creation of stable quarry reservoirs of multipurpose function.