There are six lopsided river regime sections in the 90km meandering channel in the lower Qinhe River.

Ecological Investigation of Freshwater Crab and River Pollution in Basin of Qinhe River;

Evaluation on the Present Situation of Water Quality and Pollution Analysis of Qinhe River s Shanxi Section;

Evaluation on the Water Quality of Qinhe River’s Jincheng Section with the Gray Relative Analysis Method;

Simulation of interactions between surface water and groundwater in Qin River basin;

Evaluation of influence of Qinyang City Ziling to Gecun Qin River Highway Bridge on flood control of bridge location;

Study on the Interaction between Surface Water and Ground Water in Qin River Basin Using a Distributed Hydrological Model;

In view of the present flood control engineering works and existing problems in the flood control of the lower reaches of the Qinhe River and according to the basic consideration of the river harnessing, the paper has put forward t.

Drawing water for irrigation from the Qinhe River has a history of thousands of years.

Based on characteristics of the eco-environment in the middle reaches of the Heihe River and PSP model,9 evaluation index systems that reflect eco-environmental frangibility while being isolated from each other were selected to form a model for integrated evaluation of eco-environment fragility of the studied area using the matter-elements theory and information entropy.

A major monitoring area was selected in Jinta of the middle reaches of the Heihe River .

Based on the long-term hydrologic observations in study area,the model of the estimation of groundwater budget at the representative irrigation area in the middle reaches of the Heihe River was established in this paper.