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SPDSS Colorado Water Conservation Board, Colorado Division of Water Resources SPDSS is a part of Colorados Desicision Support System, a water management system. The The goal of CDSS is to assist users in making informed decisions regarding historic and future use of water. SPDSS The SPDSS team consists of members of various state organizations, such as the Colorado Team Water Conservation Board and the Colorado Division of Water Resources, and various consultants. For additional information, please visit the website at http://cdss.state.co.us/. New GIS Products Put to Work Over the last two years through Phases 1 and 2 of the A GIS tool for viewing groundwater data contains all SPDSS, the SPDSS team has been developing irrigated of the SPDSS groundwater data organized by aquifer. parcel boundaries and irrigation ditch service areas This setup allows the SPDSS team and others to quickly containing crop types and sources of irrigation water from visualize the data. 2001, a GIS tool for viewing groundwater data, and a Map A Map Gazetteer displays base map GIS data, the SPDSS Gazetteer displaying the SPDSS Orthoimage Base Map Orthoimage Base Map, irrigated parcel boundaries and (aerial photography) and irrigated parcels. service areas, and data from HydroBase, the States To come up with the irrigated parcels, crop types and hydrologic database, for Water Districts 1, 2, 3, and 64. service areas, the SPDSS team hit the road to meet with The Map Gazetteer is indexed and each map is printed at water commissioners and with individual ditch companies. either 1:24,000 scale or 1:48,000 scale. The gazetteer is The ditch companies provide the best information about printed on water resistant paper and will be used primarily the water source for each irrigated parcel. The SPDSS team in the ? eld by Division 1 Water Commissioners to assist and folks from the ditch companies labored over mark-ups them with their daily work. of parcel maps to make them as accurate as possible. The maps were edited in the GIS database and then taken back to water commissioners and ditch companies for a ? nal Products on Website review. Water districts in the Poudre River Basin and South Many of the GIS products are publicly Platte mainstem from Thornton to Julesburg received the available and can be downloaded at ? nal drafts of the irrigated parcel boundaries and irrigation http://cdss.state.co.us/ftp/gis.asp service areas. Those for the rest of the South Platte Basin were delivered in draft format. Irrigated Parcel Boundaries a Hot Item The Northern Colorado Water Conservancy District has North Poudre Irrigation Company, in Wellington, used the 2001 irrigated parcel boundaries and crop types Colorado, is using the 2001 irrigated parcels for an developed by the SPDSS team to help them in setting up inventory of their system and for assessing ef? ciency of a system for monitoring crops and irrigated lands on an water delivery. They have taken the parcels in their service annual basis. The Central and Lower South Platte Water area and assigned them to individual canal headgates for a Conservancy Districts are using the irrigated parcels to more detailed look at their system. assist in carrying out augmentation plans, modeling and The SPDSS team is using the parcels to assist in meetings visualizing the irrigation in their areas. with water commissioners and to ? nalize the consumptive use model.