Data Series 340
U.S. GEOLOGICAL SURVEY
Data Series 340
The database distributed with this report is in Microsoft® Access 2000 format. Table names are prefixed with “tbl_” and queries with “qry_”. Table, query, and column headings are described in table A1. The location of withdrawal points used for public supply have been omitted and replaced with “99999” pursuant to directives issued by the Department of Homeland Security.
Table A1. Description of Microsoft® Access database for ground-water withdrawal data, Death Valley regional ground-water flow system, Nevada and California, 1913–2003.
[Table/query/column headings: Table names preceded by tbl_; query names preceded by qry_]
| Table/Query/Column Headings | |
|---|---|
| Tables | Description |
| tbl_application rates | Rates applied to irrigation and domestic uses |
| tbl_raw_data | Raw annual data |
| tbl_spatial | Location and depths of withdrawal points |
| tbl_withdrawals | Withdrawals summed by withdrawal point and year |
| Queries | Description |
| qry_domestic_withdrawals_ha | Domestic withdrawals summed by hydrographic area and year |
| qry_domesic_withdrawals_withdrawal point | Domestic withdrawals summed by withdrawal point and year |
| qry_irrigation_withdrawals_ha | Irrigation withdrawals and irrigated acres summed by hydrographic area and year |
| qry_irrigation_withdrawals_record | Irrigation withdrawals summed by record |
| qry_irrigation_withdrawals_withdrawal point | Irrigation withdrawals and irrigated acres summed by withdrawal point and year |
| qry_other_withdrawals_ha | All withdrawals other than irrigation and domestic summed by hydrographic area and year |
| qry_other_withdrawals_record | All withdrawals other than irrigation and domestic summed by record |
| qry_other_withdrawals_withdrawal point | All withdrawals other than irrigation and domestic summed by withdrawal point and year |
| Column | Description |
| acres_irrigated | Number of acres irrigated |
| altitude | Withdrawal point altitude, in feet above mean sea level |
| application_rate_best | Best estimate application rate (foot per year) |
| application_rate_max | Maximum estimated application rate (foot per year) |
| application_rate_min | Minimum estimated application rate (foot per year) |
| bottom_completion | Lower end of interval in which ground water is withdrawn, in feet below land surface |
| bottom_max_completion | Maximum lower end of interval in which ground water is withdrawn, in feet below land surface |
| crop_type | L=low water-use crops; H=high water-use crops; M=undifferentiated crop types; X= not applicable |
| east_utm | Easting of withdrawal point, in meters |
| error_coefficient | -4=no use extrapolated; -3=no use interpolated; -2,-1, 0=no use reported or interpreted; 1,2=withdrawal reported or interpreted; 3=withdrawal interpolated; 4=withdrawal extrapolated; 5=withdrawal metered |
| ha | Hydrographic area designator |
| ha_plss_id | Hydrographic area, township, range, section |
| latitude | Latitude of withdrawal point, in decimal degrees |
| longitude | Longitude of withdrawal point, in decimal degrees |
| north_utm | Northing of withdrawal point, in meters |
| remarks | Point of withdrawal description |
| top_completion | Upper end of interval in which ground water is withdrawn, in feet below land surface |
| top_min_completion | Minimum upper end of interval in which ground water is withdrawn, in feet below land surface |
| withdrawal_best | Best withdrawal estimate, in acre-feet |
| withdrawal_coefficient | Irrigation use = number of acres irrigated, domestic use = number of wells, all other water uses = amount of withdrawal, in acre-feet per year |
| withdrawal_max | Maximum withdrawal estimate, in acre-feet |
| withdrawal_min | Minimum withdrawal estimate, in acre-feet |
| withdrawal_point | Point of withdrawal designator |
| withdrawal_point_accuracy | Accuracy of latitude/longitude placement of withdrawal point, in feet |
| wtr_use | Water use; C=commercial; H=domestic; I=irrigation; K=mining; N=industrial; P=public supply; R=recreation; S=stock; W=wildlife; Z=other |
| year | Calendar year of withdrawal |
U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/ds/340
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