Following the storms, Denver and its surrounding cities struggled to move tons of snow. The cost for snow removal in December 2006 alone was $2.8 million and for the period January to March 2007 the cost was $10.2 million. Many of the side streets in Denver remained covered in snow which turned to thick ice due to continued residential traffic. According to the Denver Department of Public Works, snow and ice removal efforts continued until March 26, 2007. Overall, Denver experienced the second longest period of consecutive days of snow cover, from December 21, 2006 through February 19, 2007. Once the snow melted, the city was faced with filling over 50,000 potholes that resulted from the extreme temperatures and moisture.