Scientific Investigations Report 2006-5252

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006-5252

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Table 4. Number of months with complete data, collected at four floating instrumented platforms, used to compute evaporation from Lake Mead, Arizona and Nevada, 1997–99.

[Distances are height above water surface, except water temperature, which is depth below water surface. Symbol: –, no data]

Parameter Water Barge Cove Sentinel Island Virgin Basin Overton Arm
1997 1998 1999 1997 1998 1999 1998 1999 1999
Air temperature      
6.6 feet 9 12 12 6 12 10 8 12 10
13.2 feet 9 12 – – – – – – –
33.0 feet – – – 6 12 10 – – –
Relative humidity      
6.6 feet 9 12 12 6 12 10 8 12 10
13.2 feet 9 12 – – – – – – –
33.0 feet – – – 6 12 10 – – –
Wind speed      
6.6 feet 9 12 12 5 12 10 8 12 9
13.2 feet 9 12 – – – – – – –
33.0 feet – – – 6 12 10 – – –
Wind direction – 9 12 – 10 10 – 9 10
Net radiation 9 12 12 6 12 10 8 12 10
Water temperature below surface 9 12 12 6 12 10 8 12 10
3.3 feet 9 12 – – – – – – –
6.6 feet – – – 6 12 10 8 12 10
9.9 feet 9 12 – – – – – – –
13.2 feet 9 12 12 6 12 10 8 12 10
19.8 feet – – – 6 12 10 8 12 10

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