Maine Cooperative Snow Survey
This information is provided by a partnership with Department of Agriculture, Conservation and Forestry, Maine Geological Survey and the USGS New England Water Science Center, Maine Office.
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Provisional product; subject to revision
|| Final product; no revisions
|| Final product; revised from original product
|| No product for this survey date
Map and Data Type Descriptions
| Equivalent water content in snowpack:
||Maps of equivalent water content in the snowpack in 1-inch increments based on measurements obtained from the sources listed above.
| Change in water content from preceding survey:
||Maps of the change in equivalent water content in the snowpack from the preceding survey. Only prepared while weekly surveys are being conducted.
| Snowpack depth:
||Snowpack depth in 6-inch increments based on measurements obtained from the sources listed above.
| Snowpack density:
||Snowpack density (water equivalent in inches divided by snowpack depth in inches) based on measurements obtained from the sources listed above. A snowpack with densities above 0.33 is considered "ripe". A ripe snowpack no longer has the ability to absorb rainfall and would tend to release water during a rain event.
| Equivalent water content in snowpack compared to historical values:
||These maps (called quartile maps) show areas where measured values of water content are in the lowest 25-percent of measured values (significantly below normal values), the middle 50-percent of measured values (roughly normal for this time of year), or upper 25-percent of measured values (significantly above (normal).
| Mean water content in a drainage basin:
||Mean water content in a drainage basin. It is calculated by finding the mean value of water content in a basin from the equivalent water content map above. This average water content in the basin is used in some National Weather Service river flow models.
| ASCII text file of snowpack data:
||An ASCII text file of the data used in preparing the maps for the current survey. Includes the site id, site name, site latitude and longitude (in decimal degrees), site elevation (feet above mean sea level), the survey date, and the depth, equivalent water content, and density of the snowpack.