Analysis of spatial variability in unsaturated flow is critical to evaluating contaminant transport in areas of focused or preferential flow. This study examined spatial variability at a variety of scales from focused flow through playas to preferential flow in macropores.

This study used a numerical model to examine the playa-focused recharge theory by comparing it with the spatially uniform approach and with a zonal approach.

This volume comprises several short papers that review the results of the Bureau's State Lands Energy Resource Optimization (SLERO) project.