Existing Problem: 23 degree impact sprinklers on risers, 30+ foot spacing, poor maintenance and uniformity (portable systems only).
The base system for this comparison is a solid set system which has been in operation for a number of years, but applies to only the 700 buried solid set systems in Georgia. Many of the existing buried systems fall into the "older" category and could benefit from repair and replacement of pipe and fittings.

Water Conserving Improvements

Existing system: 23 degree impact sprinklers on risers, 30+ foot spacing, poor maintenance and uniformity (portable systems only).
Existing system: 23 degree impact sprinklers on risers, 30+ foot spacing, poor maintenance and uniformity (portable systems only).

Source: Evans, R.O., K.A. Harrison, J.E. Hook, C.V. Privette, W.I. Segars, W.B. Smith, D.L. Thomas, and A.W. Tyson. 1998. Irrigation conservation practices appropriate for the Southeastern United States. D.L. Thomas (ed.) Geologic Survey Project Report No. 32. Georgia Geologic Survey, Georgia Department Of Natural Resources, Environmental Protection Division, Atlanta, GA 30334. 43p.