[Scorecard] [Fwd: Re: [Fwd: draft Technical Reports]]

[Rainer Hoenicke]

Dear all -

I asked Mik to take a look at the draft sections of the report that are 
in his realm of expertise. See below for his comments.

One question I had, but which may have already been discussed, is: Why 
did we not choose the mean monthly discharge at Agua Caliente and Oak 
Knoll normalized for preceding annual rainfall?  What we observed at Oak 
Knoll is that the average monthly discharge after 1980 for the months of 
April-June is much lower than it used to be, i.e., the annual hydrograph 
"tail" descends sooner in the late spring and extends for longer periods 
than it used to, despite slight increases in dry-season flows overall.  
Did you guys discuss this at some point?

Rainer

-------- Original Message --------
Subject: 	Re: [Fwd: [Scorecard] draft Technical Reports]
Date: 	Thu, 2 Oct 2008 11:35:32 -0700 (PDT)
From: 	mikolaj at sfei.org
To: 	Rainer Hoenicke <rainer at sfei.org>
References: 	<48E3FE62.8030408 at sfei.org>



Watershed Health Scorecard Comments

I have a few very minor comments regarding the flow precipitation and
ground water sections of the Scorecard Report. In my opinion, in the
future some of the indicators should be normalized by parameters that
represent the climate. For example, the water table could be normalized by
the annual (or multi year) precipitation. This could help to eliminate the
strong influence of climate on some of the scores. The same approach could
apply to the stream flow that could be expressed as a ratio of monthly
flow to monthly precipitation. The average daily flow values may be not
sensitive enough to the anthropogenic processes within the watershed.

Mikolaj

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-- 

Rainer Hoenicke, Ph.D.
Deputy Director
San Francisco Estuary Institute
7770 Pardee Lane
Oakland, CA 94621
510-746-7381
www.sfei.org