USGS Scientific Investigations Report 2012–5062  - Groundwater Simulation and Management Models for the Upper Klamath Basin, Oregon and California 

Table 4. Sensitivity of optimization model results to changes in groundwater discharge depletion constraint limit for drains (equation 32). 

[All volumes are in acre-feet. Abbreviations: TID, Tulelake Irrigation District wells; KV, Klamath Valley wells; ULR, upper Lost River wells; NTL, Northern Tule Lake subbasin wells; STL, Southern Tule Lake subbasin wells; LKL, Lower Klamath Lake wells; Q3, third quarter; Q4, fourth quarter]

Well group and water-year quarter	Allowable reduction in groundwater discharge to drains, in percent
Well group and water-year quarter	10	15	20 (base)	30	40
TID, Q3	0	542	705	1,916	1,916
TID, Q4	0	108	470	1,446	1,446
ULR, Q3	1,753	1,753	1,699	1,464	1,428
ULR, Q4	1,265	1,247	1,229	1,085	1,121
KV, Q3	11,911	15,834	17,352	17,985	17,424
KV, Q4	5,567	10,212	11,460	13,773	14,677
NTL, Q3	705	1,681	3,290	7,447	7,447
NTL, Q4	651	1,229	1,518	6,055	6,127
STL, Q3	5,766	6,688	11,731	16,322	15,273
STL, Q4	2,892	3,507	4,808	6,615	7,881
LKL, Q3	1,085	1,085	1,085	1,085	1,085
LKL, Q4	940	940	940	940	940
Total	32,535	44,826	56,286	76,132	76,765