[cardcrimson]

Right, snow is more important for the State's overall water supply; rain for the local supplies that are not tied to State Water, like Marin and Sonoma Counties. With Anderson drained as we do the seismic retrofit, Santa Clara County has lost most of its local supply. Really need San Luis to fill up and support import. Some of the deeper coastal groundwater basins (e.g. Castroville-Salinas) where people have been forced to find freshwater that is not intruded with saltwater take thousands of years to recharge with "connate" water, so not much help there, ever.

This graph is illustrative. There is a mean value, but look at the variability and lack of persistence from year to year.  Random City!  I'm still in the process of stochastically generating 100,000 years of record for the work at Anderson (Rev. 13 of the report on my desktop now), so I'll thank David Freyberg and his Stochastic Hydrology course circa 1985.  But starting to blow cover here, so I'll stop.

A friend with whom I've worked on a salt marsh restoration project in the East Bay is an expert on flood control. A few years back, he pointed me to the Great Flood of 1862 and its impact to California in general and to Contra Costa in particular. Pretty stunning, especially as that flood wasn't the "big one", and had been bettered by many floods over the last couple of millennia. Looking at the last 100k years must show a pretty impressive series of floods that shaped California as we see it today. Don't think we're headed for a mega flood this year, but we're knocking on the door of one. . ..

[cardcrimson]

Right, snow is more important for the State's overall water supply; rain for the local supplies that are not tied to State Water, like Marin and Sonoma Counties. With Anderson drained as we do the seismic retrofit, Santa Clara County has lost most of its local supply. Really need San Luis to fill up and support import. Some of the deeper coastal groundwater basins (e.g. Castroville-Salinas) where people have been forced to find freshwater that is not intruded with saltwater take thousands of years to recharge with "connate" water, so not much help there, ever.

This graph is illustrative. There is a mean value, but look at the variability and lack of persistence from year to year.  Random City!  I'm still in the process of stochastically generating 100,000 years of record for the work at Anderson (Rev. 13 of the report on my desktop now), so I'll thank David Freyberg and his Stochastic Hydrology course circa 1985.  But starting to blow cover here, so I'll stop.

A friend with whom I've worked on a salt marsh restoration project in the East Bay is an expert on flood control. A few years back, he pointed me to the Great Flood of 1862 and its impact to California in general and to Contra Costa in particular. Pretty stunning, especially as that flood wasn't the "big one", and had been bettered by many floods over the last couple of millennia. Looking at the last 100k years must show a pretty impressive series of floods that shaped California as we see it today. Don't think we're headed for a mega flood this year, but we're knocking on the door of one. . ..