Table 9. Calculated quarterly withdrawals by pumping region and year based on analysis of removal of selected background pumping, upper Klamath Basin, Oregon and California, 1970–2004. 


[Shading used to emphasize years in which groundwater demand is not met. All withdrawal volumes are in acre-ft. Abbreviations: KLV, Klamath Valley wells; NTL northern Tule Lake wells; STL, southern Tule Lake wells; LKL, Lower Klamath Lake wells; KLR, Klamath River wells; Q3, third quarter; Q4, fourth quarter]

Pumping region and water-year quarter	Water year
	1970	1973	1976	1977	1979	1980	1981	1986	1987	1988	1989
KLV, Q3	2,916	7,073	0	10,123	8,527	0	309	7,865	10,226	10,307	0
Q4	4,986	7,312	1,337	9,323	7,353	0	3,240	9,111	9,476	9,592	391
NTL, Q3	8,075	8,439	0	9,662	5,519	202	6,162	4,352	10,091	9,998	0
Q4	3,804	6,353	1,348	6,028	5,387	1,269	6,139	3,987	7,107	8,378	618
STL, Q3	4,832	5,166	957	13,669	11,936	4,803	11,235	6,148	13,738	15,378	781
Q4	3,221	8,900	2,461	7,700	7,563	6,162	11,485	3,692	8,964	10,887	4,259
LKL, Q3	678	1,285	0	1,667	436	0	1,272	440	1,739	1,762	0
Q4	1,098	421	0	1,457	800	1,295	1,152	353	1,514	1,559	0
KLR, Q3	0	0	0	806	0	214	827	0	849	794	0
Q4	0	0	0	726	0	0	756	0	755	0	0
Total	29,610	44,949	6,103	61,161	47,521	13,945	42,577	35,948	64,459	68,655	6,049
Demand	29,610	44,949	6,103	69,198	47,521	13,945	42,577	35,948	68,945	69,162	6,049

Pumping region and water-year quarter	Water year
	1990	1991	1992	1994	1997	1999	2000	2001	2002	2003	2004
KLV, Q3	10,144	10,294	9,508	10,126	0	703	0	10,090	6,149	4,613	4,585
Q4	9,368	8,725	4,472	9,169	0	703	2,108	8,784	7,386	1,949	5,743
NTL, Q3	9,879	10,050	10,322	10,048	0	1,259	0	8,697	8,083	9,606	4,553
Q4	7,337	8,092	8,064	7,338	2,106	3,862	1,776	4,839	7,477	5,240	4,025
STL, Q3	15,902	16,303	15,833	15,213	0	0	1,796	14,372	11,456	7,144	15,930
Q4	11,012	13,204	12,805	9,680	0	6,812	4,413	9,240	6,561	1,806	7,976
LKL, Q3	1,699	1,682	457	1,682	0	0	0	1,661	1,377	446	0
Q4	1,493	1,647	377	1,463	592	0	157	1,426	1,253	1,702	0
KLR, Q3	835	0	0	820	0	823	0	214	124	895	0
Q4	137	0	0	735	0	0	0	734	190	827	0
Total	67,806	69,997	61,838	66,274	2,698	14,162	10,250	60,057	50,056	34,228	42,812
Demand	92,415	102,466	69,198	83,686	2,698	14,162	10,250	66,463	50,056	34,228	42,812

First posted April 23, 2014