Rio Grande DSS 1936 Irrigated Parcels
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: State of Colorado - DWR
- Publication_Date: 1936
- Publication_Time: 4/01/07
- Title: Rio Grande DSS 1936 Irrigated Parcels
- Edition: 1
- Geospatial_Data_Presentation_Form: vector digital data
- Publication_Information:
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- Publication_Place: Denver, Colorado
- Publisher: State of Colorado -- SWR
- Online_Linkage: \\Gisdenver\GIS_DATA\div3_irrig_1936.shp
- Description:
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- Abstract:
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Spatial and informational database of irrigated parcels in the San Luis Valley during the 1936 growing season in support of the Rio Grande DSS.
- Purpose: Spatial integration of the Rio Grande DSS.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: Growing Season 1936
- Currentness_Reference: publication date
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -107.166255
- East_Bounding_Coordinate: -105.274410
- North_Bounding_Coordinate: 38.399101
- South_Bounding_Coordinate: 36.977434
- Keywords:
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- Theme:
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- Theme_Keyword: Irrigated Parcel
- Theme_Keyword: Crop Type
- Theme_Keyword: Acreage
- Theme_Keyword: Well Coverage
- Theme_Keyword: Ditch Service Area
- Place:
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- Place_Keyword: Division 3
- Place_Keyword: Rio Grande
- Place_Keyword: Colorado
- Place_Keyword: San Luis Valley
- Access_Constraints: There are no access constraints to this data.
- Use_Constraints: There are no use constraints for this data.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Chris Brown
- Contact_Organization: Colorado Division of Water Resources
- Contact_Position: GIS Analyst
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: 1313 Sherman St
- City: Denver
- State_or_Province: Colorado
- Postal_Code: 80203
- Country: USA
- Contact_Voice_Telephone: 303-866-3581 x8256
- Contact_Electronic_Mail_Address: chris.k.brown@state.co.us
- Hours_of_Service: M-F 8-5 MST
- Data_Set_Credit:
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Dataset produced by Chris Brown, Colorado Division of Water Resources
- Native_Data_Set_Environment:
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Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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The original hard copy map was scanned and then digitally cropped by township. These townships were then individually geo-referenced to a PLSS grid provided by the DWR for greater accuracy. Once referenced, individual irrigated areas were cut out and attributed with crop type. Water sources were derived by overlaying ditch service areas in combination with groundwater source algorithm. Wellhead location database and water district boundary, county, and HUC spatial coverage's were provided through the RGDSS.
- Logical_Consistency_Report:
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Digitizing was done using a subtractive method, that is, the non-irrigated areas were removed from the base polygon shapefile. The resulting coverage was then attributed by crop type and acreages were computed. Once this process was completed for all 93 referenced townships, each township went through a QA/QC process to check consistency in the attributing of crop types and referencing. There are some inconsistencies between the 1936 base map and the more recent USGS mapping. In some cases, half townships were not mapped in the 1936 map and these half townships were mapped on the USGS base maps. This situation resulted in a shift in the spatial location of certain irrigated areas, however, this instance does not effect the acreage calculations performed on the irrigated acreage shapefile. In other cases, irrigated areas were mapped as being contiguous with a stream or river in the 1936 base map. When overlaid on the USGS mapping, these irrigated areas may not necessarily fall on the stream. This is most likely due to the stream or river not being correctly mapped in the 1936 map. These differences in base mapping occur mostly along the upper reaches of the tributaries to the valley.
- Completeness_Report: The entire map 1936 map was digitized.
- Lineage:
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- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator: Rio Grande Joint Investigation Committee
- Publication_Date: 1937
- Title: San Luis Valley Irrigated Lands
- Geospatial_Data_Presentation_Form: map
- Source_Scale_Denominator: 1:63360
- Type_of_Source_Media: paper
- Source_Time_Period_of_Content:
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- Source_Currentness_Reference: publication date
- Process_Step:
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- Process_Description:
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Digitizing was done using a subtractive method, that is, the non-irrigated areas were removed from the base polygon shapefile. The resulting coverage was then attributed by crop type and acreages were computed. Once this process was completed for all 93 referenced townships, each township went through a QA/QC process to check consistency in the attributing of crop types and referencing. Crop types from original map were condensed to 5 crop types for modelling reasons. Water sources were attributed using a ditch service area coverage and a source wellhead algorithm.
- Source_Used_Citation_Abbreviation:
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\\DWRDENCKBXPPC\C$\GIS\Projects\RioGrande\Div3_1936_StateDGI.mdb
- Process_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Chris Brown
- Contact_Organization: Colorado Division of Water Resources
- Contact_Position: GIS Analyst
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 1313 Sherman St
- City: Denver
- State_or_Province: Colorado
- Postal_Code: 80203
- Country: USA
- Contact_Voice_Telephone: 303-866-3581 x8256
- Contact_Electronic_Mail_Address: chris.k.brown@state.co.us
- Hours_of_Service: M-F 8-5 MST
- Cloud_Cover: NA
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: G-polygon
- Point_and_Vector_Object_Count: 10264
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Grid_Coordinate_System:
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- Grid_Coordinate_System_Name: Universal Transverse Mercator
- Universal_Transverse_Mercator:
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- UTM_Zone_Number: 13
- Transverse_Mercator:
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- Scale_Factor_at_Central_Meridian: 0.999600
- Longitude_of_Central_Meridian: -105.000000
- Latitude_of_Projection_Origin: 0.000000
- False_Easting: 500000.000000
- False_Northing: 0.000000
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
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- Abscissa_Resolution: 0.000256
- Ordinate_Resolution: 0.000256
- Planar_Distance_Units: meters
- Geodetic_Model:
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- Horizontal_Datum_Name: North American Datum of 1983
- Ellipsoid_Name: Geodetic Reference System 80
- Semi-major_Axis: 6378137.000000
- Denominator_of_Flattening_Ratio: 298.257222
- Entity_and_Attribute_Information:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: div3_irrig_1936
- Attribute:
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- Attribute_Label: FID
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
-
- Unrepresentable_Domain:
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Sequential unique whole numbers that are automatically generated.
- Attribute:
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- Attribute_Label: Shape
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
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- Attribute_Label: OBJECTID
- Attribute:
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- Attribute_Label: AREA
- Attribute_Definition: Area in Meters
- Attribute:
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- Attribute_Label: CAL_YEAR
- Attribute_Definition: Data Year
- Attribute:
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- Attribute_Label: DIV
- Attribute_Definition: Water Division
- Attribute:
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- Attribute_Label: PARCEL_ID
- Attribute_Definition: Unique Identifier
- Attribute:
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- Attribute_Label: CROP_TYPE
- Attribute_Definition: Irrigated Crop Type
- Attribute_Definition_Source: CDSS
- Attribute:
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- Attribute_Label: IRRIG_TYPE
- Attribute_Definition: Method of Irrigation
- Attribute_Definition_Source: CDSS
- Attribute:
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- Attribute_Label: PERIMETER
- Attribute:
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- Attribute_Label: ACRES
- Attribute_Definition: Area in Acres
- Attribute:
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- Attribute_Label: SW_WDID1
- Attribute_Definition: Surface Water Source ID
- Attribute:
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- Attribute_Label: SW_COV1
- Attribute_Definition: Percent Coverage of Surface Water WDID
- Attribute:
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- Attribute_Label: SW_WDID2
- Attribute:
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- Attribute_Label: SW_COV2
- Attribute:
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- Attribute_Label: SW_WDID3
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- Attribute_Label: SW_COV3
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- Attribute_Label: SW_WDID4
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- Attribute_Label: SW_COV4
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- Attribute_Label: SW_WDID5
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- Attribute_Label: SW_COV5
- Attribute:
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- Attribute_Label: SW_WDID6
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- Attribute_Label: SW_COV6
- Attribute:
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- Attribute_Label: SW_WDID7
- Attribute:
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- Attribute_Label: SW_COV7
- Attribute:
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- Attribute_Label: SW_WDID8
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- Attribute_Label: SW_COV8
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- Attribute_Label: SW_WDID9
- Attribute:
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- Attribute_Label: SW_COV9
- Attribute:
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- Attribute_Label: GW_TYPE1
- Attribute_Definition: Groundwater Source Type
- Attribute:
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- Attribute_Label: GW_ID1
- Attribute_Definition: Groundwater Source ID
- Attribute:
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- Attribute_Label: GW_CLASS1
- Attribute_Definition: Percent Groundwater Source Coverage
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- Attribute_Domain_Values:
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- Unrepresentable_Domain: Positive real numbers that are automatically generated.
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Ray Bennett
- Contact_Organization: CWCB
- Contact_Position: Special Projects Manager
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 1313 Sherman St
- City: Denver
- State_or_Province: Colorado
- Postal_Code: 80203
- Country: USA
- Contact_Voice_Telephone: 303-866-3585
- Contact_Electronic_Mail_Address: ray.bennett@state.co.us
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- Contact_Person_Primary:
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- Contact_Person: Chris Brown
- Contact_Organization: Colorado Division of Water Resources
- Contact_Position: GIS Analyst
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 1313 Sherman St
- City: Denver
- State_or_Province: Colorado
- Postal_Code: 80203
- Country: USA
- Contact_Voice_Telephone: 303-866-3581 x8256
- Contact_Electronic_Mail_Address: chris.k.brown@state.co.us
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Generated by mp version 2.8.6 on Tue Aug 14 14:15:07 2007