Open-File Report 01-282

Sediment-Deposition Rates and Organic Compounds in Bottom Sediment at Four Sites in Lake Mead, Nevada, May 1998

Table 1. Index to sediment coring sites and types of samples collected in Lake Mead, May 1998

Site number: Sites are listed in general west-to-east, then north-to-south order.

U.S. Geological Survey site identification: The standard site identification is based on the grid system of latitude and longitude. The number consists of 15 digits. The first six denote the degrees, minutes, and seconds of latitude; the next seven denote the degrees, minutes, and seconds of longitude; and the last two digits (assigned sequentially) identify the sites within a 1-second grid. For example, site 360713114504601 is at 36° 07' 13" N latitude and 114° 50' 46" W longitude, and is the first site recorded in that 1-second grid. The assigned number is retained as a permanent identifier even if a more precise latitude and longitude are determined.

Lake elevation: Water level of Lake Mead at Hoover Dam, in meters above mean sea level, as reported by the U.S. Bureau of Reclamation (1998).