Water Surface Area (WSA)
“Total water surface area" means the total surface area of all bodies of water that are an integral part of the water-intensive landscaped area of a turf-related facility, but not including bodies of water used primarily for swimming purposes.”(Alternative Mining Conservation Program, 2022)
It derived form water pixels that are identified using spectral indices like the Normalized Difference Water Index (NDWI), the Modified NDWI (MNDWI) or the Automated Water Extraction Index (AWEI) (Du et al., 2016) (Feyisa et al., 2014) (Özelkan, 2020).
Alternative Mining Conservation Program. 2022. DRAFT UPDATES TO 5MP INDUSTRIAL REGULATORY LANGUAGE. https://www.azwater.gov/sites/default/files/media/CH06_5MPDraft_RegLang….
Du, Yun, Yihang Zhang, Feng Ling, Qunming Wang, Wenbo Li, and Xiaodong Li. 2016. “Water Bodies’ Mapping from Sentinel-2 Imagery with Modified Normalized Difference Water Index at 10-m Spatial Resolution Produced by Sharpening the SWIR Band.” Remote Sensing 2016, Vol. 8, Page 354 8 (4). Multidisciplinary Digital Publishing Institute: 354. doi:10.3390/RS8040354.
Feyisa, Gudina L., Henrik Meilby, Rasmus Fensholt, and Simon R. Proud. 2014. “Automated Water Extraction Index: A New Technique for Surface Water Mapping Using Landsat Imagery.” Remote Sensing of Environment 140 (January). Elsevier: 23–35. doi:10.1016/J.RSE.2013.08.029.
Özelkan, Emre. 2020. “Water Body Detection Analysis Using NDWI Derived from Landsat-8 OLI.” Polish Journal of Environmental Studies 29 (2). HARD Publishing s.c. Jerzy Radecki, Hanna Radecka: 1759–69. doi:10.15244/PJOES/110447.