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Not to mention that we'd need to pump those millions of acre-feet uphill into the various agricultural regions. Some are lower lying but if California is seriou
by apcragg 5y ago
Not to mention that we'd need to pump those millions of acre-feet uphill into the various agricultural regions. Some are lower lying but if California is serious about its GHG targets, it won't be building the massive power stations required to pump all of that water in addition to desalinating it.
- seanmcdirmid 5y agoAssuming the the other challenges can be met, me solution to distribution is to use desalinated water to fill up underground aquifers. The other option is simply to move agriculture closer to the coasts.
- mlyle 5y agoThe Central Valley aquifer does not extend to the coast and is poorly connected to the coastal aquifier: https://www.usgs.gov/mission-areas/water-resources/science/central-valley-aquifer?qt-science_center_objects=0#qt-science_center_objects https://www.usgs.gov/mission-areas/water-resources/science/c... There is not enough flat, cultivatable land closer to the coasts to move much agriculture out of the central valley towards the coast, even if desal'd water was free.
- simfree 5y agoDesalination allows the now unused surface water to be collected and diverted further upstream, slowing the decline of upstream aquifers. For the upstream cities that use the Colorado River this could be quite beneficial.
- seanmcdirmid 5y agoBut now we are talking about building a tunnel rather than an aqueduct. It isn’t weird to drill water tunnels for a hundred or so miles.
- mlyle 5y agoOther than the fact that this is even more capex and opex that will exceed any economic use of water in agriculture.