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Scientific Investigations Report 2008–5093

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5093

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Table 4. Measured and HEC-6 simulated water-surface elevations and differences in four model calibrations for five gaging stations in the modeled reach, Coeur d’Alene River, Idaho.

[Abbreviations: WSE, water-surface elevation; ft3/s, cubic foot per second; ft, foot; XS, cross section; NA, not applicable]

Model
calibration
No.		 Date Category Gaging stations
Harrison
(12413860)
[XS 134.636]		 Rose Lake
(12413810)
[XS 153.362]		 Cataldo
(12413500)
[XS 162.948]		 Enaville
(12413000)
[XS 168.713]		 Pinehurst
(12413470)
[XS 1.580]
1 02-10-96 Main-stem discharge (ft3/s) 41,000 41,000 41,000 29,500 5,500
Measured WSE (ft) 2,132.34 2,142.28 2,150.79 2,176.36 2,178.49
Simulated WSE (ft) 12,132.34 2,142.22 2,150.73 2,176.46 2,178.48
WSE difference (ft) NA .06 0.06 -.10 .01
2 04-25-96 Main-stem discharge (ft3/s) 25,500 25,500 25,500 19,400 3,850
Measured WSE (ft) 2,129.95 2,138.40 2,147.44 2,173.69 2,176.76
Simulated WSE (ft) 12,129.95 2,138.46 2,147.41 2,173.76 2,176.87
WSE difference (ft) NA -.06 .03 -.07 -.11
3 05-24-96 Main-stem discharge (ft3/s) 6,440 6,440 6,440 4,130 1,300
Measured WSE (ft) 2,130.20 2,132.03 2,141.90 2,166.82 2,175.06
Simulated WSE (ft) 12,130.20 2,132.02 2,141.91 2,166.76 2,175.00
WSE difference (ft) NA 0.01 -.01 .06 .06
4 05-17-97 Main-stem discharge (ft3/s) 22,200 22,200 22,200 16,700 4,610
Measured WSE (ft) 2,136.70 2,140.27 2,147.05 2,172.69 2,178.33
Simulated WSE (ft) 12,136.70 2,140.24 2,147.03 2,172.60 2,178.36
WSE difference (ft) NA .03 .02 .09 -.03

1 Water-surface elevation for downstream model boundary.

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