Table 1 - Inventoried irrigated acreage summarized by crop and county in the Suwannee River Water Management District, 2015

To accurately estimate agricultural water use or to project future water demands, a detailed inventory of current irrigated crop acreage is needed at a high level of resolution. In many Florida counties this kind of detailed high-resolution inventory is not available. A detailed digital map and summary of irrigated acreage during the 2015 growing season was developed for 13 of the 15 counties that compose the Suwannee River Water Management District. The irrigated areas were delineated using land-use data, orthoimagery, water management district consumptive water-use permits, and digitized agricultural landuse maps developed by the Florida Department of Agriculture and Consumer Services, Florida Statewide Agricultural Irrigation Demand geodatabase. These areas were then field-verified between May and November of 2015 and summarized. Selected attribute data were collected for the irrigated areas, including crop type, primary water source, and type of irrigation system.

为精准估算农业用水量或预测未来需水量，需获取高分辨率的当前灌溉作物种植面积详细清单。但佛罗里达州多数县尚未拥有此类高分辨率的详细灌溉面积清单。针对组成萨旺尼河水资源管理区（Suwannee River Water Management District）的15个县中的13个，本研究构建了2015年生长季灌溉面积的详细数字地图与汇总数据集。灌溉区域的划定参考了土地利用数据、正射影像（orthoimagery）、水资源管理区的耗水许可文件，以及由佛罗里达农业与消费者服务部（Florida Department of Agriculture and Consumer Services）开发的数字化农业土地利用地图、佛罗里达州全域农业灌溉需求地理数据库（Florida Statewide Agricultural Irrigation Demand geodatabase）。上述划定的灌溉区域于2015年5月至11月间完成野外验证并完成汇总。研究同时采集了灌溉区域的部分属性数据，涵盖作物类型、主要水源及灌溉系统类型。