DESCRIPTION OF MAP UNITS. Alluvium (Quaternary) - Variably sized gravel overlain by unconsolidated. sand, silt, and clay comprises the unit. This unit occurs in the floodplains of. streams and rivers. The sediments form a rich loam and are excellent for. agriculture.
For information on township officials, view the County and Township Officials list. Clay County vs Minnesota. Clay County's population has grown from 25,227 people in 1940 to 58,999 in 2010. The population increased 15.2% between 2000 and 2010. The City of Moorhead is the most populated city, with 38,065 residents.
Key Findings. 1  The total population of Minnesota in 2014, based upon our office's estimates, is 5,453,218. 2  Additionally, there were 2,149,023 households in the state in 2014. 3  Minnesota's population grew 2.8% between 2010 and 2014, adding 149,293 residents (net).