Priorities are established in the City’s Snow and Ice Control Policy that guide the actions of the Operations Division to provide efficient snow plowing operations. Arterial Street, Snow Routes, and Priority Routes will be the primary focus for snow plowing while the snow is actively falling. Business Districts will also be a focus for plowing depending upon the timing of the storm.
If snow fall amount exceed three inches, residential streets will also be plowed. The City utilizes contract plowing services a times to assist in plowing residential streets, circles, and cul-de-sacs.
Depending upon the severity of the storm, all streets are typically plowed within 16 hours after the end of the storm. A breakdown of plowing priorities is listed in the table below:
Maps of these priorities can be found in the City of Ames Snow and Ice Control Policy(PDF, 9MB).
| Priority |
Classification |
Actual Depth of Snow When Service Levels Apply |
Depth of Snow/Timing When Plowing Commences |
| 1 |
Arterial Streets (Appendix A), Snow Routes (Appendix B), Priority Routes (Appendix C) |
2” |
Plowing starts when snow depth/forecast will allow for efficient plow operations and will be continuous until final clean up. |
| 2 |
Main Street, Campustown, Somerset Business Districts |
2” |
Plowing starts when snow depth/forecast will allow for efficient plow operations. Clean up will likely occur overnight. |
| 3 |
Residential Streets, Circles and Cul-de-sacs (Non Snow Routes) |
3” |
Plowing in residential areas typically only occurs when 3” or more of snow accumulates. Plowing typically starts when snowfall ends unless forecasts show a prolonged event. |
| 4 |
Parking Lots, Sidewalks, Trails, and Shared Use Paths |
1” |
Plowing will typically start after snowfall ends and after street priorities are finished. |
| 5 |
Alleys |
4” |
Plowing in alleys will typically only occur when 4” or more of snow accumulates. Plowing typically starts when snowfall ends unless the forecast shows a prolonged event. |
During an average storm, the goal is that snow plowing operations will be completed in 16 hours. Actual performance will vary greatly, depending upon factors such as actual snowfall amount vs. forecast amount, air and pavement temperatures, previous accumulations, etc… It is important to note that many of these factors are outside of the control of the City.