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Ground-Water Hydrology of the Upper Klamath Basin, Oregon and ...

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82 <strong>Ground</strong>-<strong>Water</strong> <strong>Hydrology</strong> <strong>of</strong> <strong>the</strong> <strong>Upper</strong> <strong>Klamath</strong> <strong>Basin</strong>, <strong>Oregon</strong> <strong>and</strong> California<br />

Table 6. Estimated ground-water discharge to principal stream reaches in <strong>the</strong> upper <strong>Klamath</strong> <strong>Basin</strong>, <strong>Oregon</strong> <strong>and</strong> California.—Continued<br />

[Reach: River miles in Reach column are from <strong>Oregon</strong> <strong>Water</strong> Resources Department <strong>Klamath</strong> Drainage <strong>Basin</strong> Map, Map No. 14.6, 1971. Confidence level: Confidence levels represent a subjective assessment<br />

<strong>of</strong> <strong>the</strong> interval (plus or minus) that has a 95 percent probability <strong>of</strong> containing <strong>the</strong> true value. Confidence level categories are: 1, 10 percent; 2, 20 percent; 3, 30 percent; 4, 50 percent; 5, data insufficient to assess<br />

uncertainty. Subtotals rounded to two significant figures. Unless o<strong>the</strong>rwise noted, values were derived by taking <strong>the</strong> average <strong>of</strong> estimated discharge in <strong>the</strong> fall (Sept, Oct, Nov). USGS synoptic measurement<br />

data from Leonard <strong>and</strong> Harris (1974). Abbreviations: BOR, Bureau <strong>of</strong> Reclamation; CDWR, California Department <strong>of</strong> <strong>Water</strong> Resources; Cr, Creek; ft 3 /s, cubic feet per second; Hwy, Highway; mi, mile; NA,<br />

not applicable; NPS, National Park Service; OWRD, <strong>Oregon</strong> <strong>Water</strong> Resources Department; R, River; Res, Reservoir; RM, river mile; RR, rail road; USFS, U.S. Forest Service; USGS, U.S. Geological Survey]<br />

Number Stream name Reach<br />

67 Lost River Clear Lake Reservoir<br />

(RM 78) to Malone<br />

Dam (64.5)<br />

68 Gerber<br />

Reservoir<br />

Drainage to Gerber<br />

Reservoir<br />

69 Lost River Malone Dam (RM<br />

64.5) to Gift Road<br />

(RM 58)<br />

70 Lost River Gift Road (RM 58) to<br />

Keller Bridge (RM<br />

50.3)<br />

71 Lost River Keller Bridge (RM<br />

50.3) to east<br />

Bonanza (RM 45.1)<br />

72 Lost River East Bonanza (RM<br />

45.1) to Harpold<br />

Bridge (RM 43.9)<br />

73 Lost River Harpold Bridge (RM<br />

43.9) to Harpold<br />

Dam (RM 40.8)<br />

74 Lost River Harpold Dam (RM<br />

40.8) to Kirsh<br />

Bridge (RM 34.8)<br />

Estimated gain<br />

(+) or loss (-)<br />

(ft 3 /s)<br />

Data source<br />

Period <strong>of</strong><br />

record<br />

2 BOR data 08/1987–<br />

08/2002<br />

10 USGS gage,<br />

BOR data<br />

11 OWRD synoptic<br />

measurement<br />

16 OWRD synoptic<br />

measurement<br />

9 OWRD synoptic<br />

measurement<br />

61 OWRD synoptic<br />

measurement<br />

3 OWRD synoptic<br />

measurement<br />

10 OWRD synoptic<br />

measurement<br />

10/1904–<br />

09/1951<br />

Methods Remarks<br />

Mass balance. Only November<br />

average used due to missing<br />

data in o<strong>the</strong>r months.<br />

Discharge in river <strong>and</strong> canals<br />

below Malone Dam minus<br />

Clear Lake mean monthly<br />

releases. Gains within<br />

uncertainty <strong>of</strong> estimate.<br />

Average Flows at Gerber reported by<br />

Bureau <strong>of</strong> Reclamation<br />

(1954)<br />

Confidence<br />

level<br />

12/1997 Synoptic measurement 4<br />

12/1997 Synoptic measurement 4<br />

12/1997 Synoptic measurement Synoptic overall gains (73<br />

ft 3 /s) from Keller Bridge<br />

to Harpold Dam is close to<br />

<strong>the</strong> average (82 ft 3 /s) <strong>of</strong> 13<br />

measurements taken from<br />

11/1925–12/2001<br />

12/1997 Synoptic measurement Synoptic overall gains (73<br />

ft 3 /s) from Keller Bridge<br />

to Harpold Dam is close to<br />

<strong>the</strong> average (82 ft 3 /s) <strong>of</strong> 13<br />

measurements taken from<br />

11/1925–12/2001<br />

12/1997 Synoptic measurement Synoptic overall gains (73<br />

ft 3 /s) from Keller Bridge<br />

to Harpold Dam is close to<br />

<strong>the</strong> average (82 ft 3 /s) <strong>of</strong> 13<br />

measurements taken from<br />

11/1925–12/2001<br />

12/1997 Synoptic measurement 4<br />

4<br />

4<br />

3<br />

3<br />

3

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