strong links with surface water the basis of the cooperation is the agreement between the russian federation and kazakhstan on the joint use and protection of transboundary waters issues of transboundary significance are discussed in the kazakhrussian joint commission and monitoring data is shared in the intergovernmental working group on allocation of flow of the bolshoy uzenkaraozen and malyi uzensaryozen the land area requiring irrigation largely depends on the actual availability of river water depending on the hydrometeorological conditions and ranges from some ha in wet years to ha in dry years the transboundary precaspian aquifer no three reservoirs in kazakhstan are the sarshyganak x m the ajdarchansk x m and the rybnyj sakryl x m reservoirs