Identification_Information: Citation: Citation_Information: Originator: Hitt, Kerie J. Publication_Date: 200504 Title: NAWQA GIS ancillary data: 1995 irrigation water use information (withdrawals, consumptive use, conveyance losses, irrigated area, and reclaimed wastewater) for ground water study areas (Land Use Studies and Subunit Surveys). Online_Linkage: Description: Abstract: This data set consists of 1995 irrigation water use information for NAWQA ground water study areas (Land Use Studies and Subunit Surveys). The water use data was supplied by Molly Maupin. Purpose: This is one of the ancillary GIS data layers developed to characterize NAWQA ground water studies for national synthesis of water-quality data. Supplemental_Information: The water use input data set did include Alaska and Hawaii, but we do not have NLCDE for those areas (so no weighting factors are available). Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1995 Currentness_Reference: The data set is intended to represent conditions for the early 1990's to late 1990's. Status: Progress: Complete Maintenance_and_Update_Frequency: NAWQA cycle 2 study areas will be added as their boundaries become available. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -125 East_Bounding_Coordinate: -66 North_Bounding_Coordinate: 50 South_Bounding_Coordinate: 24 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: NAWQA Theme_Keyword: National Water Quality Assessment Theme_Keyword: Ground water Theme_Keyword: Water quality Theme_Keyword: Water use Theme_Keyword: Irrigation Theme_Keyword: Irrigated area Theme_Keyword: Irrigation water use Theme_Keyword: Conveyance losses Theme_Keyword: Land use study Theme_Keyword: Subunit survey Theme_Keyword: Major aquifer Access_Constraints: The data set is for internal USGS access only. Use_Constraints: The data set is for internal USGS use only. Data_Quality_Information: Logical_Consistency_Report: none Completeness_Report: none Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Hitt, K.J. Publication_Date: 200304 Title: Boundaries of the land use study (LUS) and subunit survey (SUS) ground-water studies conducted by the National Water-Quality Assessment (NAWQA) study units Edition: 3 Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Type_of_Source_Media: digital files Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1991 Ending_Date: 2004 Source_Currentness_Reference: current Source_Citation_Abbreviation: GWPOLYS Source_Contribution: The boundaries of the LUS and SUS ground water study areas, as submitted by the NAWQA study units. Source_Information: Source_Citation: Citation_Information: Originator: Wayne Solley Originator: Robert Pierce Originator: Howard Perlman Publication_Date: 1998 Title: Estimated use of water in the United States in 1995 Series_Information: Series_Name: U.S. Geological Survey Circular Issue_Identification: 1200 Online_Linkage: Source_Scale_Denominator: 500,000 Type_of_Source_Media: On line Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1995 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: WU95 Source_Contribution: Table of data showing irrigation water use data by county. Process_Step: Process_Date: 20040903 Process_Description: Ground water study boundaries are gridded at 30 meters and snapped to the NLCDE. Data processing occurs at 30 meters resolution. The sum of each irrigation water use variable was determined for the study area by running the GRID command, "zonalstats" with the sum option. Processing routines are from the NAWQA area characterization toolbox. The basic procedure is to calculate a sum of each water use variable in the ground water study. The sum of each irrigation water use variable in the ground water study is calculated by multiplying the total for the irrigation water use variable in a county by the fraction of all agricultural land in that county in the ground water study and summing the values for each county in the ground water study. Here are the weighting factors for pasture/hay and row crops for the ground water study around nvbrlusag2_trg, which contains one county: !GWBNDC1_FIPSLU.AWT ! !FIPS NLCDE AREAKM2 ALLAG6 ALLAG6_KM2 !32001 81 77.81040000 0.42003190 185.24880000 ALLAG6 is the fraction of the total ag land in the county that is in the ground water study. !(ALLAG6 = AREAKM2 / ALLAG6_KM2) The irrigation water use data for county 32001 are: !IRRWU.DAT ! ! Water use variable Value ! WGWFR 13.400 mgd ! WGWTO 13.400 mgd ! WSWFR 120.700 mgd ! WSWSA 0.000 mgd ! WSWTO 120.700 mgd ! WFRTO 134.100 mgd ! WSATO 0.000 mgd ! WTOTL 134.100 mgd ! CUSFR 91.400 mgd ! CUSSA 0.000 mgd ! CUTOT 91.400 mgd ! CLOSS 38.400 mgd ! IRSPR 7.500 thousand acres ! IRSPRKM2 30.351 sq km ! IRMIC 0.000 thousand acres ! IRMICKM2 0.000 sq km ! IRSUR 37.100 thousand acres ! IRSURKM2 150.138 sq km ! IRTOT 44.600 thousand acres ! IRTOTKM2 180.490 sq km ! IRRECWW 0.010 mgd According to the water use table, county 32001 has a total of 180.49 km2 of IRTOTKM2 (total irrigated area). The total irrigated area in the ground water study is calculated as fraction of total agland in the county in the ground water study * total irrigated area in the whole county (applies only to agland categories in ground water study): !ALLAG6 * IRTOTKM2 for NLCDE 81 = !0.42003190 * 180.490 = !75.81 km2 of irrigated area in ground water study A limitation of this procedure may occur when the amount of irrigated land from the water use data base differs from the amount of county ag land from NLCDE. If irrigated area from the water use data base is more than NLCDE ag land, sometimes calculated irrigated area in a ground water study is more than the total NLCDE ag land calculated in the ground water study. For example, calculated total irrigated area exceeds the total agricultural land area for ground water study rioglusag1_trg: !TOTAL AREA OF CALCULATED !AGRICULTURAL LAND IN IRRIGATED AREA IN !rioglusag1_trg rioglusag1_trg !52.270199 61.063 County/NLCDE weighting factors for the ground water study are: !County NLCDE AREAKM2 ALLAG6 ALLAG6_KM2 !35013 11 1.80900000 0.00000000 0.00000000 !35013 21 0.07020000 0.00000000 0.00000000 !35013 23 0.79740000 0.00000000 0.00000000 !35013 31 0.25920000 0.00000000 0.00000000 !35013 41 0.01890000 0.00000000 0.00000000 !35013 51 20.09880000 0.00000000 0.00000000 !35013 61 1.59750000 0.00593691 269.07930000 ** !35013 62 1.12230000 0.00417089 269.07930000 !35013 71 21.70620000 0.00000000 0.00000000 !35013 81 8.39160000 0.03118634 269.07930000 !35013 82 29.89440000 0.11109880 269.07930000 !35013 84 0.03060000 0.00011372 269.07930000 !35013 85 0.03060000 0.00000000 0.00000000 !35051 11 0.55350000 0.00000000 0.00000000 !35051 21 0.00270000 0.00000000 0.00000000 !35051 23 0.16650000 0.00000000 0.00000000 !35051 31 0.01260000 0.00000000 0.00000000 !35051 41 0.00360000 0.00000000 0.00000000 !35051 51 8.53020000 0.00000000 0.00000000 !35051 62 0.33570000 0.01343031 24.99570000 *** !35051 71 8.39970000 0.00000000 0.00000000 !35051 81 1.84410000 0.07377668 24.99570000 !35051 82 8.98020000 0.35926980 24.99570000 !35051 84 0.07380000 0.00295251 24.99570000 !35051 85 0.00450000 0.00000000 0.00000000 ! __________ ! 114.7 km2 total area of ! ground water study The total irrigated area calculated for counties 35013 and 35051 show: !FIPS IRTOTKM2 km2 !35013 292.345 ** --- 292 km2 of irrigated area exceeds ! 269 km2 of NLCDE ag land in ! gw study area from county 35013 !35051 36.665 *** --- 37 km2 of irrigated area exceeds ! 25 km2 of NLCDE ag land in ! gw study area from county 35051 The irrigated area in the ground water study is calculated as the sum of ALLAG6 * IRTOTKM2 for each ag land class in each county: !FIPS NLCDE AREAKM2 ALLAG6 * IRTOTKM2 !35013 61 1.5975 0.00593691 292.3 = 1.733 !35013 62 1.1223 0.00417089 292.3 = 1.219 !35013 81 8.3916 0.03118634 292.3 = 9.114 !35013 82 29.8944 0.11109880 292.3 = 32.445 !35013 84 0.0306 0.00011372 292.3 = .0330 !35051 62 0.3357 0.01343031 36.7 = .4929 !35051 81 1.8441 0.07377668 36.7 = 2.7074 !35051 82 8.9802 0.35926980 36.7 = 13.1852 !35051 84 0.0738 0.00295251 36.7 = .1083 ! ________ ______________ ! 52.3 km2 61.03 km2 of irrigated area in gw study ! of ag land (but NLCDE shows only 52.3 km2 of ! in gw study ag land in the ground water study) The irrigated area estimated from water use data was not compared to irrigation practices derived from NRI. Data users must adjust accordingly for possible discrepancies in the various data sets. Processing routines are from the NAWQA area characterization toolbox. (Example below.) !&r weightstats gwbndc1_fipslu.awt d:/ancill/watuse/wu95/irrwu.dat gwbndc1_irrwu95.dat sum areaid allag6 countyg fipsb ~ ! WGWFR WGWTO WSWFR WSWSA WSWTO WFRTO WSATO WTOTL ~ ! CUSFR CUSSA CUTOT CLOSS IRSPRKM2 IRMICKM2 IRSURKM2 IRTOTKM2 IRRECWW Process_Step: Process_Date: 20050106 Process_Description: Corrected attribute descriptions for irrigated areas. Process_Step: Process_Date: 20050412 Process_Description: Recalculated data for several cycle 2 areas. For the previous calculations, the doughnut holes in the some of the study areas had not been removed in the gridded versions of the study areas. This affects seven study areas: with doughnuts without doughnuts cut out (correct) not cut out (incorrect) AREAID GRID AREA (M2) GRID AREA (M2) cnbrluscr1_bnd 7,044,202,800.000 7,392,941,100.000 cnbrluscr1_trg 5,706,866,700.000 6,766,256,700.000 connlusrc1_bnd 1,756,677,600.000 2,064,634,200.000 connlusrc1_trg 587,594,700.000 610,191,000.000 connsus2_bnd 6,848,918,100.000 7,617,282,300.000 nvbrlusrc1_trg 155,431,800.000 155,443,500.000 spltluscr2_trg 207,267,300.000 228,433,500.000 Also added studies that are resampled studies, but do not have the same boundaries in cycle 2 as were used in cycle 1: albelusag1, nvbrsus2, trinsus3, sanjluscr1a, sanjlusor2a. Also added willlusag3, which has the same boundaries as cycle 1 willlusag2. Process_Step: Process_Date: 20050622 Process_Description: Replaced data for santlusrc1_bnd. The study area santlusrc1_bnd should be the same as santsus1_bnd, not the same as santsus2_bnd. Spatial_Data_Organization_Information: Indirect_Spatial_Reference: The data set is referenced by SUCODE (NAWQA study unit/network code) and AREAID (ground water study boundary coverage). Two kinds of ground water network polygon coverages exist: 1) BND coverages, which represent the entire areal extent of the hydrogeologic unit defined for study, and 2) TRG coverages, which delineate the targeted land use within the BND. Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The data set is organized by SUCODE and AREAID. The data represent the sum of the water use feature for the study area. The fields for 1995 irrigation water use characteristics are: !SUID NAWQA study unit !SUCODE NAWQA study unit/network code !AREAID Ground water boundary coverage !WGWFR Withdrawals, total fresh ground water (Mgal/day) !WGWTO Withdrawals, total ground water (Mgal/day) !WSWFR Withdrawals, total fresh surface water (Mgal/day) !WSWSA Withdrawals, total saline surface water (Mgal/day) !WSWTO Withdrawals, total surface water (Mgal/day) !WFRTO Withdrawals, total fresh (Mgal/day)h !WSATO Withdrawals, total saline (Mgal/day) !WTOTL Withdrawals, total (Mgal/day) !CUSFR Consumptive Use, fresh (Mgal/day) !CUSSA Consumptive Use, saline (Mgal/day) !CUTOT Consumptive Use Total (Mgal/day) !CLOSS Conveyance Losses (Mgal/day) !IRSPRKM2 Irrigated area, sprinkler systems (KM2) !IRMICKM2 Irrigated area, micro-irrigation systems (KM2) !IRSURKM2 Irrigated area, surface (flood) systems (KM2) !IRTOTKM2 Irrigated area, total (KM2) !IRRECWW Reclaimed wastewater (Mgal/day) Entity_and_Attribute_Detail_Citation: None Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Kerie Hitt Contact_Organization: USGS NAWQA Nutrients National Synthesis Contact_Address: Address_Type: Mailing address Address: 413 National Center City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Electronic_Mail_Address: kjhitt@usgs.gov Contact_Voice_Telephone: 703 648-6854 Contact_Instructions: Contact via email Distribution_Liability: USGS assumes no liability for the use of this data set. Metadata_Reference_Information: Metadata_Date: 20050622 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kerie Hitt Contact_Organization: USGS NAWQA Nutrients National Synthesis Contact_Address: Address_Type: Mailing address Address: 413 National Center City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Electronic_Mail_Address: kjhitt@usgs.gov Contact_Voice_Telephone: 703 648-6854 Contact_Instructions: Contact via email Metadata_Standard_Name: Content standards for digital geospatial metadata Metadata_Standard_Version: FGDC-STD-001-1998