1. Final Project From USGS Hydrologic Atlas online

3. Playa Recharge Conceptual Model of the flow system

6. Layer 3 – variable bottom Layer 2 Layer 1 50 ft gap represents confining bed Layers Datum The problem of dry cells and re-saturation

7. from GWV Layer 1 = type 1 Layer 2, 3 = type 3

8. Leakance between layers where each Layer belongs to a different hydrogeologic unit See A&W, p. 81 Layer 1 leakance

9. Leakance “Quasi 3D” model See A&W, p. 81 Layer 2 leakance

10. from GWV

11. Playa Recharge Conceptual Model of the flow system

12. h Q ET = R ETM  x  y [h - (h s -d)] / d ET d hshs extinction depth R ETM is the maximum ET rate, which occurs when h = h s. for h  h s -d and h < h s

13. Q ET = 0 below the extinction depth. Q ET = Q ETM at the land surface.

14. Calibration Targets calibration value associated error 20.24 m  0.80 m Target with relatively large associated error. Target with smaller associated error.