Groundwater Recharge and Flow Approaches and Challenges for Monitoring and Modeling Using Remotely Sensed Data: Proceedings of a Workshop (2019) / Chapter Skim
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2 Regional Freshwater Budgets Under Major Use Scenarios
2 Regional Freshwater Budgets Under Major Use Scenarios
Pages 11-18
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From page 11... ...
discussed aspects of climate change resilience provided by groundwater in mountain watersheds. In the Upper Colorado Basin, more than half of the streamflow is delivered by a baseflow derived source, even though most of that is lost to evapotranspiration and diversions before it gets to the lower basin (Miller et al., 2016)
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There is some evidence to suggest that reduced recharge will have significant influence on groundwater availability, and may even degrade water quality in mineralized sub-basins (Meixner et al., 2016)
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MONSOON RAIN dominates inputs in Syr Darya Amu Darya Indus Ganges Brahmaputra the Ganges. KEY POINTS: WESTERN BASINS KEY POINTS: EASTERN BASINS Water stress is expected to increase due to limited resources, The overall volume of water available in the high economic reliance on irrigated agriculture, choice of monsoon-dominated Himalaya is an order water-loving crops like cotton and rice, and an absence of of magnitude larger than in arid Central regulated upstream-downstream water agreements between Asia.
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One study assesses deep groundwater flow in the crystalline basement below Truth or Consequences, New Mexico. The geothermal water comes from deep recharge in the mountainous terrain approximately 68 km away.
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Using MT surveys in an EarthScope style campaign to look at deep flow systems and unconventional aquifers could lead to important advances in understanding water resources of the U.S. continent and continental shelf.
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The participants were asked to identify challenges and opportunities for future research in understanding freshwater budgets. The primary challenge noted by participants was access to in situ data (including, for example, groundwater level, pumping rates, and streamflow)
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Indeed, several group members were interested in pursuing partnerships and collaborations with NGA to collect crucial information, to exploit existing resources, to enable new technology development, and to improve model accuracy. Breakout participants expressed a particular interest in working with NGA to obtain observations of variables that are difficult to measure such as river discharge from major rivers, lake and reservoir storage and their changes over time, soil moisture, land use, and aspects of human water usage including drinking water supplies near cities, mining effects on communities, and metered irrigation data.
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From page 18... ...
; perhaps groundwater can be tied to the last two • NASA Applied Remote Sensing Training (ARSET) , Applied Sciences Program (work with other national and international agencies, private industry, and end users)
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