Evaluating the Feasibility of Water Sharing as a Drought Risk Management Tool for Irrigated Agriculture
Abstract
:1. Introduction
2. Materials and Methods
2.1. Case Study Description
2.2. Methodology
- Analysis of each farm business’s actual abstraction in a recent drought year;
- Probabilistic analysis of drought risk associated with different scales of water sharing using the modified D-Risk webtool to evaluate the benefits of water sharing.
2.2.1. Analysis of Actual Abstraction in a Recent Drought Year
2.2.2. Probabilistic Analysis of Drought Risk Using the Modified D-Risk Webtool
- Licence groups (9): in which all businesses operate independently with no water sharing between businesses;
- Tributary groups (5): businesses with licences with water abstraction points along the same tributary or main channel reach;
- Sub-catchment groups (3): businesses with licences with abstraction points within common sub-catchments determined by the gauging station;
- Catchment group (1): representing all licences and businesses.
3. Results
3.1. Comparison of Total Licenced Volume and Actual Abstraction for a Drought Year
3.2. Benefits of Water Sharing within the Catchment
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Business No. | Irrigated Crop Type | Soil AWC * | Planting Month | Irrigated Area (ha) | Licence No. | Tributary Group | Sub-Catchment Group | Source/Purpose ** | Annual Licensed Volume (m3) | Daily Limit (m3) | Abstraction Period | Eq. HOF (L/Sec) | Reservoir Storage (×103 m3) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Maincrop potatoes | Low | April | 68 | L1 L2 | River Lark Tuddenham | Isleham Isleham | SW-S GW-D | 231,285 295,545 | 2569 6818 | 1/11–31/3 1/3–31/10 | 510 - | 350 |
Onions | Low | March | 50 | ||||||||||
Parsnips | Low | Feb | 68 | ||||||||||
2 | Maincrop potatoes | Low | March | 364 | L1 L2 L3 | River Lark River Lark River Lark | Temple Temple Isleham | SW-D GW-S GW-S | 90,922 945,600 1,432,000 | 1592 872 622,616 | 1/4–31/8 1/4–31/3 1/4–31/3 | - - - | 740 |
Maincrop potatoes | Med | March | 156 | ||||||||||
Onions | Low | March | 516 | ||||||||||
Carrots | Low | May | 252 | ||||||||||
Parsnips | Med | April | 149 | ||||||||||
3 | Onions | Low | March | 72 | L1 | River Lark | Temple | SW-S | 340,950 | 2851 | 1/11–31/3 | 490 | 330 |
Parsnips | Low | April | 78 | ||||||||||
Maincrop potatoes | Low | March | 54 | ||||||||||
4 | Maincrop potatoes | Med | March | 80 | L1 L2 L3 | Culford River Lark River Lark | Temple Fornham Temple | SW-S SW-S GW-D | 154,54 6154,54 6230,000 | 4000 2592 3637 | 1/11–31/3 1/11–31/03 1/04–31/03 | - 120 - | 150 |
Onions | Med | March | 45 | ||||||||||
Sugar beet | Med | April | 15 | ||||||||||
5 | Spring cereals | Med | March | 38 | L1 L2 L3 L4 | Tuddenham Tuddenham Tuddenham Tuddenham | Isleham Isleham Isleham Isleham | SW-S SW-S GW-D GW-D | 230,000 127,200 80,000 33,000 | 3264 3437 1137 941 | 1/11–31/3 1/4–31/10 1/4–31/10 1/4–31/10 | 821 1917 - - | 409.15 |
Spring cereals | Med | Sept | 92 | ||||||||||
Sugar beet | Med | March | 78 | ||||||||||
Onions | Med | April | 21 | ||||||||||
Carrots | Med | April | 72 | ||||||||||
Maincrop potatoes | Low | April | 92 | ||||||||||
6 | Sugar beet | Med | March | 26 | L1 L2 | Cavenham River Linnet | Temple Fornham | SW-S SW-S | 90,909 90,909 | 1300 1300 | 1/11–31/3 1/11–31/3 | 404 - | 91 |
Maincrop potatoes | Med | April | 24 | ||||||||||
Maincrop potatoes | Low | April | 10 | ||||||||||
7 | Maincrop potatoes | Low | April | 23 | L1 | Culford | Temple | SW-S | 113,636 | 880 | 1/11–31/3 | 1510 | 93 |
Sugar beet | Low | March | 81 | ||||||||||
8 | Maincrop potatoes | Low | March | 9 | L1 | Culford | Temple | SW-D | 55,598 | 982 | 1/4–30/9 | - | 0 |
9 | Maincrop potatoes | Low | March | 62 | L1 | Culford | Temple | SW-D | 45,500 | 955 | 1/5–30/9 | 0 |
Water Sharing Category | Zero Deficit | Low Deficit (0–25%) | Medium Deficit (25–50%) | High Deficit (>50%) |
---|---|---|---|---|
Licence groups | ||||
High headroom (50–100%) | 8 | |||
Medium headroom (25–50%) | 4 | 6 | 2 | 7 |
Low headroom (0–25%) | 1,5 | 3,9 | ||
Tributary groups | ||||
High headroom (50–100%) | ||||
Medium headroom (25–50%) | 6 | |||
Low headroom (0–25%) | 1,2,3,4,5 | 7,8,9 | ||
Sub-catchment groups | ||||
High headroom (50–100%) | ||||
Medium headroom (25–50%) | 4,6 | |||
Low headroom (0–25%) | 1,2,3,5,7,8,9 | |||
Catchment groups | ||||
High headroom (50–100%) | ||||
Medium headroom (25–50%) | ||||
Low headroom (0–25%) | 1,2,3,4,5,6,7,8,9 |
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Chengot, R.; Knox, J.W.; Holman, I.P. Evaluating the Feasibility of Water Sharing as a Drought Risk Management Tool for Irrigated Agriculture. Sustainability 2021, 13, 1456. https://doi.org/10.3390/su13031456
Chengot R, Knox JW, Holman IP. Evaluating the Feasibility of Water Sharing as a Drought Risk Management Tool for Irrigated Agriculture. Sustainability. 2021; 13(3):1456. https://doi.org/10.3390/su13031456
Chicago/Turabian StyleChengot, Rishma, Jerry W. Knox, and Ian P. Holman. 2021. "Evaluating the Feasibility of Water Sharing as a Drought Risk Management Tool for Irrigated Agriculture" Sustainability 13, no. 3: 1456. https://doi.org/10.3390/su13031456
APA StyleChengot, R., Knox, J. W., & Holman, I. P. (2021). Evaluating the Feasibility of Water Sharing as a Drought Risk Management Tool for Irrigated Agriculture. Sustainability, 13(3), 1456. https://doi.org/10.3390/su13031456