-56- 



B. 1:24,000 scale (one inch equals 2000 feet) 



The following phenomena were mapped at the above scale on USGS 

 quadrangle sheets and then indexed to the larger study area map. 



1. natural areas (primary sites) 



2. buffer zones 



3. bald eagle nests 



4. osprey nests 



5. major heronries 



6. Delmarva fox squirrel 



7. federally owned conservation, recreation, and military 

 lands 



8. state owned conservation and recreation lands 



The above map sets are available for reference use at the Center for 

 Natural Areas, Smithsonian Institution, 3300 Astral Building, L'Enfant 

 Plaza, Washington, D. C. 20560 (Tel. 381-6568). Copies (blackline 

 osalid prints) of the 1:250,000 scale maps of the entire study area are 

 available, at printing cost, from the Center for Natural Areas. The 

 combined set of large and small scale maps is according to the staff's 

 knowledge at this time, the only single area-wide compilation of such 

 data for the entire Chesapeake Bay region. 



In addition to the mapping, a data retrieval system was set up to 

 handle non-graphic data. While a computer would represent the ideal 

 repository for data of this nature, time limitations and the need for 

 portability of the information suggested a simpler, interim solution. 

 Data cards (Burroughs Y-9 Unisort) that utilize a punch-hole sorting 

 technique were typed for each natural area. The system can handle 22 

 blocks of ten bits each of 220 items per card. Desired information 



