[EBB Sightings] McNabby Marsh Bone Dry

Last Sunday morning (Aug. 1st), as I drove past McNabby Marsh (along 680 in 
Martinez), I noticed that this march was bone dry--the clay throughout the 
marsh was cracked--indicating that this march has been dry for a number of 
days.  Does anyone know what the "story" is behind this?  Does the bridge 
contruction have any thing to do with this?  In my several years of birding at 
this great spot, I've never seen this marsh completely dry.  I am interested 
in taking follow-up action with this issue when I return from my 
teaching/research trip this week at the Sagehen Creek Field Station. Any 
information any of you know about this would be most helpful.  Thanks--and 
good birding--Ted Robertson--

Ted Robertson
Lawrence Hall of Science/Rm. 114
Univ. of California
1 Centennial Drive
Berkeley, Ca  94720-5200
510-642-4087