The Universal Soil Loss Equation (USLE) was developed at the USDA National Runoff and Soil Loss Data Center at Purdue University in a national effort led by Walter H. Wischmeier and Dwight D. Smith. The USLE was published in 1965 in USDA Agriculture Handbook 282.
1965
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A = average annual soil loss (in tons/acre)
R = rainfall erosivity index
K = soil erodibility factor
LS = topographic factor
C = cropping factor
P = conservation practice factor
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Hydro-Quebec's 735,000 volt electric power transmission system was the first in the world to be designed, built and operated at an alternating-current voltage above 700 kV. This development extended the limits of long-distance transmission of electrical energy. On 29 November 1965 the first 735 kV line was inaugurated. Power was transmitted from the Manicouagan-Outardes hydro-electric generating complex to Montreal, a distance of 600 km.
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Established 1965 the Orroral Valley Station, as well as the Honeysuckle Creek (1967) and Tidbinbilla (1965) sites supported NASA’s Deep Space Network, Manned Space Flight Network, and Spacecraft Tracking and Data Acquisition Network. The stations played a key role in supporting the Apollo 11 moon landing, with the Honeysuckle Creek facility providing the first historic pictures of man walking on the moon on July 20, 1969 (July 21st in Australia), as well as providing voice and telemetry contact with the lunar module.

Established 1965 the Tidbinbilla Tracking Station, as well as the Honeysuckle Creek (1967-1981) and Orroral Valley (1965-1985) sites, supported NASA’s Deep Space Network, Manned Space Flight Network, and Spacecraft Tracking and Data Acquisition Network. The stations played a key role in supporting the Apollo 11 moon landing, with the Honeysuckle Creek facility providing the first historic pictures of man walking on the moon on July 20, 1969 (July 21st in Australia), as well as providing voice and telemetry contact with the lunar module.
Innovations
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Established 1965 the Tidbinbilla Tracking Station, as well as the Honeysuckle Creek (1967-1981) and Orroral Valley (1965-1985) sites, supported NASA’s Deep Space Network, Manned Space Flight Network, and Spacecraft Tracking and Data Acquisition Network. The stations played a key role in…
Read More
Established 1965 the Orroral Valley Station, as well as the Honeysuckle Creek (1967) and Tidbinbilla (1965) sites supported NASA’s Deep Space Network, Manned Space Flight Network, and Spacecraft Tracking and Data Acquisition Network. The stations played a key role in supporting the Apollo 11…
Read More
Hydro-Quebec's 735,000 volt electric power transmission system was the first in the world to be designed, built and operated at an alternating-current voltage above 700 kV. This development extended the limits of long-distance transmission of electrical energy. On 29 November 1965 the first 735…
Read More
The Universal Soil Loss Equation (USLE) was developed at the USDA National Runoff and Soil Loss Data Center at Purdue University in a national effort led by Walter H. Wischmeier and Dwight D. Smith. The USLE was published in 1965 in USDA Agriculture Handbook 282.
The USLE is…
Read More