This page has only limited features, please log in for full access.
Droughts can exert significant pressure on regional water resources resulting in abstraction constraints for irrigated agriculture with consequences for productivity and revenue. While water trading can support more efficient water allocation, high transactional costs and delays in approvals often restrict its wider uptake among users. Collaborative water sharing is an alternative approach to formal water trading that has received much less regulatory and industry attention. This study assessed how the potential benefits of water sharing to reduce water resources risks in agriculture are affected by both drought severity and the spatial scale of water-sharing agreements. The research focused on an intensively farmed lowland catchment in Eastern England, a known hot-spot for irrigation intensity and recurrent abstraction pressures. The benefits of water sharing were modelled at four spatial scales: (i) individual licence (with no water sharing), (ii) tributary water sharing among small farmer groups (iii) sub-catchment and (iv) catchment scale. The benefits of water sharing were evaluated based on the modelled reductions in the probability of an irrigation deficit occurring (reducing drought risks) and reduced licensed ‘headroom’ (spare capacity redeployed for more equitable allocation). The potential benefits of water sharing were found to increase with scale, but its impact was limited at high levels of drought severity due to regulatory drought management controls. The broader implications for water sharing to mitigate drought impacts, the barriers to wider uptake and the environmental consequences are discussed.
Rishma Chengot; Jerry Knox; Ian Holman. Evaluating the Feasibility of Water Sharing as a Drought Risk Management Tool for Irrigated Agriculture. Sustainability 2021, 13, 1456 .
AMA StyleRishma Chengot, Jerry Knox, Ian Holman. Evaluating the Feasibility of Water Sharing as a Drought Risk Management Tool for Irrigated Agriculture. Sustainability. 2021; 13 (3):1456.
Chicago/Turabian StyleRishma Chengot; Jerry Knox; Ian Holman. 2021. "Evaluating the Feasibility of Water Sharing as a Drought Risk Management Tool for Irrigated Agriculture." Sustainability 13, no. 3: 1456.
The Soil Conservation Service - Curve Number (SCS-CN) method is extensively used to calculate the runoff from rainfall over a large catchment over the world. Slope is an important criterion for runoff but a very few attempts have been made to evaluate the effect of slope on the CN with runoff potential. The objective of this paper is to summarise the historical review on the effects of slope on CN and runoff potential in various regions by the hydrologists. This paper also depicts that how the various researchers proved the importance of consideration of slope for CN and runoff estimation. In addition, paper highlights the key features of research in future like to classify the watersheds on slope based CN, accurate Antecedent Moisture Condition (AMC) and proper initial abstraction in the various regions etc. Considering these parameters an accurate runoff estimation can be predicted and managed properly in the urban watersheds.
Tauseef Ahmad Ansari; Yashwant B Katpatal; C Rishma. A Historical Review of Slope Based SCS Method and its Effect on CN and Runoff Potential Globally. 2020, 1 .
AMA StyleTauseef Ahmad Ansari, Yashwant B Katpatal, C Rishma. A Historical Review of Slope Based SCS Method and its Effect on CN and Runoff Potential Globally. . 2020; ():1.
Chicago/Turabian StyleTauseef Ahmad Ansari; Yashwant B Katpatal; C Rishma. 2020. "A Historical Review of Slope Based SCS Method and its Effect on CN and Runoff Potential Globally." , no. : 1.