| Washita'94 was a program of
hydrologic field experiments conducted over the Little Washita watershed near Chickasha, OK.
The primary objective of these experiments was to provide combined ground and remotely
sensed data sets for modeling and analysis of hydrologic state and flux variables. The
determining factors in the timing of these experiments were the Space Shuttle Imaging radar
missions (SIR-C) planned for April and August of 1994. Each SIR-C mission was to consist of
one week of daily observations for the watershed site. The principle hydrologic variable
analyzed was surface soil moisture. In addition, meteorologic observations were available from
an intensive network within the watershed which included evaporative flux stations installed to
support the experiments.
Washita'94 was a cooperative experiment between NASA, USDA, several other government agencies and universities. The Little Washita Watershed was selected for this effort due to the extensive hydrologic research that has been conducted there in the past, (primarily the Washita'92 experiments), its ongoing data collection efforts, the cooperation and facilities of its staff, and the complementary nature of the region to previously conducted large scale remote sensing experiments.