these are found at the national and regional levels in france and the netherlands six regions in figure in france under the loi sur ieau et les milieux aquatiques the prefets can create zones of environmental constraints on which they can impose water restrictions barraque et al in recent years the upper republican natural resources district has had an active land retirement program spending usd million to purchase acres hectares of irrigated land in in the rock creek area and joining with the middle and lower republican natural resources districts and the twin platte natural resources district to purchase almost acres hectares of land for usd million in mccabe in both cases the natural resources district is constructing stream augmentation projects that will link wells to nearby streams directly with a pipeline