Abstarct: Beldeh is located at the southwest of Amol city, Mazandaran province. The average annual precipitation is about 500 millimeters. The major rivers of the region are Baldeh, Yalrood, Oz and Bradon. The most important geological formations of the region are the Shemshak Formation and Kandak Stone Complex (Eocene Gypsum Formation). Due to the presence of gypsum stones in Baladeh region and the possibility of affecting the quality of water resources in the region, it is necessary to study the geomorphology of gypsum karsts, hydrogeological and hydrogeochemical characteristics of basin water resources. The results from studies have shown that gypsum karsts in the Yalrood region are significantly more developed than other areas. The reason for this is the presence of important geomorphologic complications of karst (eutrophy, blocked nose, dissolving cavities and polyethylene) in the region. In addition, important gypsum springs are located in the Yarrow area. All gypsum springs of the region have two coefficients of discharge, which are close to each other and relatively small. The reason for this is that in gypsum formations (unlike carbonate formations) due to the lack of gypsum and their high solubility, the ducts formed are rapidly destroyed, resulting in the channeling of the flow of inhibition It comes in handy. According to the maps of the spatial and temporal changes of the ions, for the samples taken, the origin of the waters in the region is not the same, and water springs and rivers come from different parts. baxsed on Styfe, Piper, and Schuler diagrams, we can conclude that the water quality of the springs is inappropriate (calcium sulfate water type) and the water quality of the rivers (biochemical calcicus). To be Due to the mixing of rivers and springs, the quality of water is lower (after the mixing of springs and rivers), but due to the insignificance of the springs, compared to the river bank The effect of lowering the quality of water at the bottom (Baladeh River) is lost and water quality improves again.