The Seymour Aquifer (Unconfined) is located within the Seymour Formation. The aquifer area consists of alluvium areas in parts of 23 different counties in North-central Texas. The alluvium areas can range from 20 square miles for the area of Baylor County, to over 425 square miles for the area that covers Haskell and Knox Counties. About 90% of the water that is pumped from the Seymour is used for irrigation. The other 10% is used for municipal support for communities like Vernon, Burkburnett, and Electra. The Seymour Formation is filled with discontinuous beds of poorly sorted gravel, sand, silty clay, and conglomerate. The beds varied greatly in thickness when they were deposited during the Quaternary Period of the Permian Age by eastward flowing streams. Most of the Seymour is less than 100 feet in thickness but increase to more than 360ft in thickness in the northern part of the aquifers extent. The Seymour recharge is mostly derived from direct infiltration from precipitation at the surface. Surface streams like the Brazos River and Lake Creek that adjoin with the Seymour, are at lower levels than the aquifers water levels so they are unable to contribute to the recharge amount. Water from irrigational and municipal use sometimes infiltrates back into the aquifer but these values are relatively tiny. One other possibility of recharge is the leaky Permian formations that lie beneath the Seymour, but this value is also small and insignificant. Being that most of the recharge comes from precipitation it is not always uniform over the entire aquifer extent. Recharge rates are greater in areas of sandy soils instead of clay. (Harden, 1978) Figure 4 shows the stratigraphic cross section of the Seymour Formation for Haskell and Knox counties. The Items labeled “A” and “A’” can be represented in Figure 1 in the first part of the report locating the cross section of the aquifer. (R.W. Harden, 1978.)