Prioritization of subwatersheds based on flooding conditions using hydrological model, multivariate analysis and remote sensing technique

Abstract

Prioritization of watersheds has gained more importance in natural resources management, particularly in the context of watershed management. Flooding potential is one of the main indices used to prioritize watersheds. The objective of this study is to investigate the Pol‐Doab Shazand Watershed flooding conditions as a result of land use change and prioritization of its subwatersheds using rainfall – runoff data. For this purpose, after computation of design flow with different return periods, factor analysis technique was applied to determine the best flow with proper return period towards evaluation and prioritization of subwatersheds. The results showed that the design flow with 25‐year return period (Q25) is suitable. The results indicate that subwatershed 22 is the highest priority because of large changes in peak flow, and subwatershed 2 given the lowest priority since changes in peak flow is the lowest.

The Impact of Development Plans on Hydrological Changes in the Shazand Watershed, Iran

“…The land‐use maps were then prepared using supervised maximum likelihood classification method (Al Kuwari & Kaiser, ) and after applying geometric and radiometric corrections. The method of comparison after the classification based on Kappa coefficient and overall accuracy identification for the different band combinations was used to select the best band combinations (Darabi et al ., ). Land‐use types were divided into seven classes: settlement and industrial areas, irrigated farms, rain fed farms, bare lands, rangelands, orchard, and rocky areas.…”

Watershed Health Characterization Using Reliability–Resilience–Vulnerability Conceptual Framework Based on Hydrological Responses

“…Its minimum temperature is −7.7° in January, and its maximum reaches to 33.8° in July. The watershed has been under rapid industrialization stressor resulted in changing hydrological behavior (Mokhtari et al, ; Darabi et al, ; Davudirad et al, ). A general feature of the study watershed and governing conditions have been shown in Figure .…”

Dynamic Analysis Of Soil Erosion-Based Watershed Health

“…The watershed with a total area of almost 1740 km2 is composed of nearly 44.85 % alluvial sediments and/or sub-mountain gravels and 50.15 % highlands and hard formations. The climate is moderate semi-arid to cold semi-arid (Bsk) and receives about 420 mm rainfall annually (Mokhtari et al 2011;Darabi et al 2014;Davudirad et al 2016). Since 1973, a rapid industrialization has been taken place in the Shazand Watershed.…”

“…Since 1973, a rapid industrialization has been taken place in the Shazand Watershed. Consequently, the social and economic development in this area was completely changed (Darabi et al 2014;Davudirad et al 2016;Sadeghi et al 2018).…”