By Aldo Leopold
"We can position this publication at the shelf that holds the writings of Thoreau and John Muir." San Francisco Chronicle
These stunning pics of the wildlife discover the breathtaking variety of the unspoiled American panorama -- the mountains and the prairies, the deserts and the coastlines. a gorgeous tribute to our land and a daring problem to guard the realm we like.
Read Online or Download A Sand County Almanac (Outdoor Essays & Reflections) PDF
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Extra resources for A Sand County Almanac (Outdoor Essays & Reflections)
Sample text
Soil survey products also supply detail on cultural or planimetric information. These details can be used to locate a given property on the soil survey maps. Once the property is located, the reader should note the presence of soil types indicated by soil type boundaries and map codes. A list of these types should be made, and the characteristics of each soil type should be evaluated from the descriptive part of the soil survey. Soil types are described in the county soil survey by the name of a location where the particular soil type was originally described.
They are based on extensive field‑ and office work. In a preliminary evaluation of a property, the soil survey may be very helpful in identifying hydric soil types and potential jurisdictional wetland areas. The level of detail of a soil survey is good but necessarily general in nature. Soil surveys include soil type maps that consist of soil boundary delineations on copies of black‑and‑white aerial photos (USDA 1962, 1975). This “photo map” product can be easy to use because the aerial photo mapping base records a lot of information.
To make a finding that an area is a jurisdictional wetland it is necessary to (1) have hydric soils, (2) have evidence of wetland hydrology, and (3) find that 50% or more of the dominant plants have a high probability of occur‑ ring in a wetland. All three of these criteria must be satisfied. Failure to meet one or more of the three criteria means that the area is not considered a wetland for jurisdictional purposes. Use other sources of data and field checks to determine the adequacy and accuracy of mapped jurisdictional wetland boundaries.