. Reports of the Department of the Interior for the Fiscal Year ended June 30, 1917. whole monthsthe temperature at that place was not once as high as*the melting point, 32° late as May 1 there was an average depth of snow on the main road sys-tem of 35 to 40 inches, and the melting of snow in the interior of the park didnot occur to any large extent until almost June. The melting of snow duringthe month of June throughout the portions of the park adjacent to the beltline was very great, the snow belt receding from the vicinity of the GoldenGate, 3J miles from Mammoth Springs, so that at
. Reports of the Department of the Interior for the Fiscal Year ended June 30, 1917. whole monthsthe temperature at that place was not once as high as*the melting point, 32° late as May 1 there was an average depth of snow on the main road sys-tem of 35 to 40 inches, and the melting of snow in the interior of the park didnot occur to any large extent until almost June. The melting of snow duringthe month of June throughout the portions of the park adjacent to the beltline was very great, the snow belt receding from the vicinity of the GoldenGate, 3J miles from Mammoth Springs, so that at the end of the month prac-tically all the belt line was free of snow, with the exception of a few driftson the Continental Divide Road and the remains of one very heavy drift onthe Canyon-to-Lake Road. At the end of June the south approach, the eastapproach, and the Dunraven Pass and Mount Washburn Roads were still blockedby snow. The melting of snow caused practically all streams to be flooded, sometimesbeyond their banks, in many cases requiring prompt and energetic action to. REPORT DIRECTOR NATIONAL PARK SERVICE. 907 keep the roads open to traffic and to prevent serious damage to the small breaks and bad mudholes in the roads did occur, but werepromptly repaired as the snow belt receded. Small crews were organized asnecessary to cope with these situations, and also with the very serious condi-tions of the roads in the localities where auto and truck traffic began justas soon as the snowdrifts had been cut through. Many minor breaks occurredin the road system, due to the incapacity of the small culverts to care for theunprecedented amount of water from the melting snows. All of these breakswere either temporarily bridged over or refilled, with practically no interruptionto traffic. The wear and tear on the roads caused by the automobile and truck trafficwhile the roads were still covered by or still wet from the winters snow,the depth of which and the late me
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