sources such as types of farming maps or livestock numbers recorded for 

 tax purposes. 



Studies of the probable impacts of future projects should be based on 

 farm-by-farm and tract-by-tract surveys. Gathering pre-construction data 

 would require additional field resources on the part of the Corps of Engi- 

 neers, the Department of Agriculture, the State Experiment Station, or some 

 other designated agency. Inasmuch as it is already necessary to map the 

 area under consideration when contemplating a particular project, and to 

 have engineers and appraisers go over the area rather thoroughly, the 

 inclusion of personnel specifically trained to appraise effects in economic 

 and/or sociological terms might prove a sound investment. Valuable addi- 

 tional data would be available for use in appraising, valuing, and settling 

 for lands and units acquired. Such data would contribute to the most exact- 

 ing estimates possible of the effects of the project, not only on agriculture, 

 but on other segments. With heterogeneous units, the added accuracy from 

 surveying would undoubtedly be worth the extra eifort required. 



Synthesis 



To derive estimates of actual pre- and post-construction agricultural output 

 in reservoir aieas, which form the basis for subsequent appraisals of the 

 effects of particular flood control projects, it was necessary to use informa- 

 tion from a number of sources. Such estimates, as previously noted, are 

 approximations of the results which might have been obtained by on-the- 

 spot current surveys. 



For the post-construction period, the following types of data were used: 



(a) Maps and leasing records of the Corps of Engineers, and discussions 

 with Corps personnel. 



(b) Interviews with as many present and former lessees as could be 

 reached within the limits of time and personnel devoted to the study. 



(c) Field notes obtained by a visit to all tracts presently or formerly 

 leased. 



(d) Aerial photographs. 



For the pre-construction period, the following types of data were used: 



(a) Maps and acquisition records of the Corps of Engineers, in- 

 cluding land classifications of appraisers. 



(b) Discussions with appraisers, former owners, and present and 

 former town officials. 



(c) Aerial photographs. 



52 



