Flow Criteria

This category contains 7 posts

SWRCB issues draft decision approving Davis-Woodland water right

This week the State Water Resources Control Board issued a draft decision (PDF) approving a permit for a new water right granted to the City of Davis, the University of California at Davis, and the City of Woodland.  These entities currently rely on groundwater, but the quality is degraded and they would have to plunge … Continue reading

State Water Resources Control Board adopts Delta flow criteria

Yesterday the State Water Resources Control Board unanimously adopted criteria describing the flows deemed necessary to protect public trust resources in the Delta, as detailed in the draft report released last month.  This approval of the report meets the statutory deadline and is even slightly ahead of schedule.  Within nine months, the SWRCB collected extensive … Continue reading

Draft report available for the Delta flow criteria

The Delta Reform Act of 2009 requires that the State Water Resources Control Board develop new flow criteria describing the flows needed to protect public trust resources in the Delta.  In theory, these criteria will inform the BDCP and Delta Plan, while furthering the Legislature’s co-equal goals of ecosystem restoration and water supply reliability.  A … Continue reading

Flow Criteria for the Delta: Or, maybe it is all about the fish

One problem with the package of water legislation passed in 2009?  The more you stare at it, the less you understand — and the stronger your head aches. (I know: I promised that we would leave this behind and do science instead.  We’ll do that next time.) Two posts ago, we discussed some reasons for … Continue reading

Flow Criteria for the Delta: Numbers or narrative?

Before going more into these flow criteria, I would like to clarify a personal opinion briefly.  My general stance on water issues often tend toward an environmentalist leaning.  In the context of Delta issues, that means taking the time and effort to study carefully what the needs of the ecosystem are.  It also means augmenting … Continue reading

Flow Criteria for the Delta: Wading through muddy legislation

Populations of fish in the Delta have plummeted in recent years to historically low levels.  The Delta’s current configuration — diked, drained, and channelized — has restricted habitat for native species.  In light of this physical configuration, existing flows are not sufficient to ensure a healthy Delta ecosystem.  The Delta Reform Act passed as part … Continue reading

An Initial Glance at the Delta Flow Criteria Process

On March 22-24, 2010, the State Water Board held a public proceeding to collect testimony that it will use this year to inform its development of Delta flow criteria.  A few weeks prior to the proceeding, written testimony and questions were submitted by various parties to the State Board.  During the proceedings, Board members had … Continue reading


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