LIST OF FIGURES 



Figure Page 



1. Marietta tank connected to soil tank to maintain a 



constant water level in the soil and supply water 



evaporated or transpired. Santa Ana station, 



1929-32 20 



2. Diurnal fluctuations in southern California streams 



(after Troxell) 32 



3. Combination flume for measurement of water at both 



high and low stages 34 



4. Representative ground-water curve, showing effect of 



the daily cycle of transpiration by overlying vege- 

 tation (after Troxell) 37 



5. Plan of evaporation station near Santa Ana, Calif. 42 



6. Hourly rate of use of water by tules, evaporation from 



stajidard Weather Bureau pan, and air and water tem- 

 peratures, at Prado station 53 



7. Plan of Victorville station 60 



8. Stream flow, consumptive use by moist-land vegetation, 



and comparison of rate of consumptive use by tank 

 vegetation with air temperatures at Temescal Creek - 69 



9. Flow at middle Coldwater Canyon control 79 



10. Plan of Parma station, San Luis Valley, Colo. 90 



11. Plan of Isleta station, N. Mex. , 1936 94 



12. Sketch of water supply lay-out at Isleta station 95 



13. Plan of Mesilla Dam station 98 



14. Examples of recorder charts showing ground-water fluc- 



tuations due to daily transpiration losses by 



various species of native vegetation (after White) - 109 



15. Relation of consumptive use of water by saltgrass in 



tanks to depth to water table 129 



16. Comparison of consumptive use of water by tules in 



swamps and evaporation from a Weather Bureau pan 133 



17. Comparison of consumptive use of water by saltgrass 



where approximate depth to ground water is 24 inches, 

 and evaporation from a Weather Bureau pan 137 



iz 



