NEV. 



ARIZONA 



SAN BERNARDINO CO. 



Needles ' 



MOHAVE CO. 



I Topock Marsh 



Topock 

 Gorge 



LakeHavasu "*>s^ Bill Williams 

 Delta 

 Parker Dam 



CC 



o 



< 



Headgate Rock Dam_^ 

 -jC 



Parker 



Lost Lake »\ 



Wl)(/ar 



Lake IVIodvalya 



RIVERSIDE CO. 



BIythe 



Palo Verde Diversion Dan 



U.S. Highway 60-70 



Palo Verde Lagoon 

 Davis L.( 

 Three Fingers L. 



Draper L.Jl] 



Taylor Ferry 



/)£> Cibola L. 



YUMA CO. 



IMPERIAL CO. 



/Xii Aniencan 

 Morelos 



Martinez I 

 Laguna Dam i 



» Dobe L. 

 Imperial Dam 



r.^^'y 



oi 



n^ 



'MIttry L. 



Yuma 



Tacna 



BAJA CALIFORNIA 



Colorado River Delta 



• Riito 



MARICOPA CO. 



RWef 



WINTER 

 RECORDS 



SONORA 



Known range of the Yuma clapper rail. 

 3 



