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<br />Table 4 contains descriptive statistics of the sample database by individual <br />basins and as a total. The statewide mean (average) gallons per capita day is <br />220.3. Basin averages range from 178.9 gpcd in the San Juan/Dolores basin to <br />334.4 gpcd in the Rio Grande basin. <br /> <br />The sample mean household size is 2.50 persons per household. There is little <br />variation among the basin averages of household size. Similarly, the basin <br />averages of the ratio of single-family housing to total housing show little <br />variation from the statewide sample mean single-family ratio of 0.69 (i.e., 69 <br />percent of total housing is single-family housing). Basin mean household <br />income ranges from $49,042 in the South Platte basin to $24,286 in the Rio <br />Grande basin. However, the sample-wide mean income is almost $42,000 per <br />household. <br /> <br />Employment ratios created for industrial, retail, and service sectors suggest <br />that statewide industrial (manufacturing) employment is about 6 percent of <br />total employment, retail employment is 18 percent of total employment, and <br />the service sector employment is about 28 percent of total employment. The <br />industrial employment ratio remains below 10 percent of total employment <br />across the basins. However, there is a range from 12 percent to 22 percent <br />retail employment across basin averages and a wider range from 8 percent to <br />37 percent of service employment across the basin averages. <br /> <br />Weather variables include average daily maximum temperature in 2000, <br />departure from normal (temperature), 30-year normal (temperature), total <br />precipitation in 2000, departure from normal (precipitation), and 30-year <br />normal (precipitation). Departure variables with values less than 1.0 indicate <br />that the year 2000 value is less than the 30-year average, while departure <br />values greater than 1.0 indicate that the year 2000 value is more than the 30- <br />year average. For all basins, the basin mean of the maximum temperature <br />departure indicates that temperatures in 2000 were slightly above normal. <br />Basin means of the precipitation departure variable suggest that, on average, <br />precipitation was above normal in three basins. Minimum and maximum <br />values indicate that in all basins, except the Yampa and the North Platte, year <br />2000 precipitation observations ranged from well below normal to well <br />above normal. <br /> <br />13 <br /> <br />III. Data Collection and Analysis <br />