This report updates and expands the "unpublished" BLM report Authorized Grazing Within Grazing
Districts: 1947 - 1993 (Larry Walker, Oregon State Office, Bureau of
Land Management, August 1995).
It presents a history of grazing on BLM lands Within Grazing Districts
(administered under Section 3 of the Taylor Grazing Act) for the period 1947
through 2000, and on BLM lands Outside of
Grazing Districts (administered under Section 15 of the Taylor Grazing Act)
for the period 1979 through 2000. These are the entire periods of record that
were available for these two classes of grazing use in the source documents, Public
Land Statistics (published annually) and its predecessors for the period 1947 through 2000.
The data was
transcribed directly from the source documents with the following provisions:
- "Operators or Permits/Leases". While not identical, numbers of
operators and numbers of permits/leases are similar. Variation in published
reports made it impossible to use just operators or just permits/leases for the
entire period of record.
- There were a few instances where it was very obvious that the published
numbers were a gross reporting error. Estimates were used in these
situations and are shaded in the tables. Estimates were derived by averaging
the previous reporting year with the following reporting year.
- "Permitted AUMs" were listed as "Preference AUMs"
prior to 1999, and "Preference AUMs" were not directly reported
before 1985. For the period of 1962 through 1984, "Preference AUMs"
were estimated by adding published figures for authorized non-use to the
published figures for total authorized use.
- Where data is presented by state, it is presented by
"administrative" state. Some states administer BLM lands that are
physically located in other states.
- No warranty is made by the author, RangeNet.org, or Western
Watersheds Project, Inc. as to the accuracy, reliability or completeness of
these data for individual use or aggregate use with other data.