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Based on a regional case study from central West Jordan (Karak Plateau), the applicability, benefits and limitations of high-resolution remotely sensed imagery, semi-automatic image analysis with Feature Analyst, and GIS analyses are explored with respect to rainwater harvesting (RWH) practices. GeoEye-1 satellite imagery and derived land use/land cover information facilitated the mapping of existing RWH structures and the differentiated estimation of the regional RWH potential by the use of semi-automatic analyses. Hydrological analyses in ArcGIS, in combination with digital elevation model data (ASTER GDEM), allowed the detection and quantification of spatial patterns. The results, particularly those of the site characteristics and proximity analyses, provided valuable insights into the relationship between water resources, landscape, and settlements, and the changes over time in the management of water resources. Additionally, a comprehensive assessment of the regional RWH potential was achieved. In the around 160 km2 big study area, over 1,400 individual structures associated with RWH were identified. This figure includes almost 400 cisterns of various age, many of which were probably built centuries to millennia ago. Their total storage capacity was estimated at around 21,270 m3, which corresponds to approximately 0.38% of the calculated total annual on-site runoff from potentially suitable pervious areas. Additionally, a rooftop RWH potential of almost 154,000 m3 was computed for years with average precipitation. In general, RWH is seen as a valuable part of an integrated water management strategy, in which it helps securing water supply and enhances resilience by increasing the diversity of available water resources.

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GIS and Remote Sensing for a Better Understanding of Ancient and Modern Rainwater Harvesting Strategies and the Identification of Current Potentials and Improvement Possibilities

  • 章节

  • 发表日期：

    2025年

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  • Barbara Brilmayer Bakti,
  • Arwa Hamaideh,
  • Olaf Bubenzer

摘要

Based on a regional case study from central West Jordan (Karak Plateau), the applicability, benefits and limitations of high-resolution remotely sensed imagery, semi-automatic image analysis with Feature Analyst, and GIS analyses are explored with respect to rainwater harvesting (RWH) practices. GeoEye-1 satellite imagery and derived land use/land cover information facilitated the mapping of existing RWH structures and the differentiated estimation of the regional RWH potential by the use of semi-automatic analyses. Hydrological analyses in ArcGIS, in combination with digital elevation model data (ASTER GDEM), allowed the detection and quantification of spatial patterns. The results, particularly those of the site characteristics and proximity analyses, provided valuable insights into the relationship between water resources, landscape, and settlements, and the changes over time in the management of water resources. Additionally, a comprehensive assessment of the regional RWH potential was achieved. In the around 160 km2 big study area, over 1,400 individual structures associated with RWH were identified. This figure includes almost 400 cisterns of various age, many of which were probably built centuries to millennia ago. Their total storage capacity was estimated at around 21,270 m3, which corresponds to approximately 0.38% of the calculated total annual on-site runoff from potentially suitable pervious areas. Additionally, a rooftop RWH potential of almost 154,000 m3 was computed for years with average precipitation. In general, RWH is seen as a valuable part of an integrated water management strategy, in which it helps securing water supply and enhances resilience by increasing the diversity of available water resources.