To assist Anthony Watts survey the weather stations used in the US Historical Climate Network, I visited the Lake Spaulding site on Friday the 11th of May.
Lake Spaudling, entry from SR-20, Nevada City nearest town
Survey by Russ Steele
USHCN Reported Coordinates of site: Lake Spaulding (39.32N, 120.64W)
GPS Coordinates of the historical site: 39.3187N, 120.6387W Elevation 5167 Ft
GPS Coordinates of the current site: 39.3248N, 120.6433W, Elevation 5115 Ft
Site description and known history:
This site has two certificates for 50 and 75 years of service. Estimated time by caretaker is about 90 years. This site was automated in 2002 and move from a location near the caretakers cabins to the maintenance shop over looking the dam.
Site Survey Notes Historical Location:
1. There were two shelters, one on the ground and one in trapeze to elevate the shelter above the snow. These shelters are not currently in use. There was no evidence of latex paint on the shelters or any electronic equipment in the cabinets. Note the two layer roof with an airspace in the photo of the shelter. The caretaker said only manual readings were take at the historical site, when automated in 2002 it was moved to the maintenance shop near the dam. The caretaker said in the winter they used tea kettles of hot water to remove ice and snow that collected in side the shelter house.
2. The shelter is located in a grove to trees which surround the site, with a gravel base under the fenced shelter enclosure. The nearest asphalt is over a 100 feet away on the one lane road accessing the site. The nearest structure is a wooden caretaker cabin about 100 feet away.
3. Collocated at the site is a tower mounted automated systems operated by the California Water Resources Board. See pictures.
Site Survey Notes the Automated Site:
1) The temperate sensor is electronic, housed in a louvered plastic cover. It is attached to a tower holding microwave antennas, on a rocky knob, over looking the river canyon The data is transmitted by telephone modem.
2) The location of the sensor is up against the mountain, with a concrete block building about 10 feet away. The building is used to store transformer oil and has a exhaust fan for removing fumes.
3) On the east side of the site is a asphalt parking lot, on the west is the canyon. South is a sloping rock wall, North a metal building. Given the structures and terrain, the main air flow is East and West, up and down the canyon.
Images of the Site (next page):