IV-146 



basins have been subjected to some type tf major waste resource 

 development, as shown 1n Table IV. 2. 11. These include flood con- 

 trol, public water supply, power generation, or navigation projects. 

 Generally, the more densely populated and the more arid States have 

 accomplished, out of necessity, greater control of the surface water 

 resources. 



California is Investing over $2 billion to conserve the surplus water 

 in the northern half of the State and transport it to the southern 

 half. This great effort requires 1nterbas1n diversions from coastal 

 basins and results in much different fresh water Inflow patterns 1n 

 the estuarine areas. Texas is also developing its water resources 

 according to a carefully developed plan. Florida has built numerous 

 flood control works which have affected the drainage from Lake 

 Okeechobee into the Everglades and have altartd the estuarine environ- 

 ment. The Savannah River in Georgia 1s fairly well-regulated by two 

 upstream reservoirs. The Roanoke River in Virginia and North Carolina 

 1s regulated, as is the Susquehanna in Maryland and Pennsylvania. 

 There are numerous control structures on small coastal streams 1n 

 New Hampshire and Oregon. 



The Columbia River in Washington and Oregon is one of the most fully 

 developed large rivers in the country. This flow regulation has had 

 an impact on estuarine ecology, especially the anadromous fish runs. 



