RULE NO: RULE TITLE
40D-8.041: Minimum Flows
PURPOSE AND EFFECT: The amendments establish a minimum flow pursuant to Section 373.042, F.S., for Crystal Springs. This water body is listed on the District’s minimum flow and levels priority list for establishment of minimum flows. The minimum flow will be used in the District’s permitting and resource management and development programs.
SUBJECT AREA TO BE ADDRESSED: Establishment of a minimum flow for Crystal Springs located within the Hillsborough River Basin in Hillsborough County, Florida.
SPECIFIC AUTHORITY: 373.044, 373.113, 373.171 FS.
LAW IMPLEMENTED: 373.036, 373.0361, 373.042, 373.0421 FS.
IF REQUESTED IN WRITING AND NOT DEEMED UNNECESSARY BY THE AGENCY HEAD, A RULE DEVELOPMENT WORKSHOP WILL BE NOTICED IN THE NEXT AVAILABLE FLORIDA ADMINISTRATIVE WEEKLY.
THE PERSON TO BE CONTACTED REGARDING THE PROPOSED RULE DEVELOPMENT AND A COPY OF THE PRELIMINARY DRAFT, IF AVAILABLE, IS: Karen A. Lloyd, Assistant Deputy Counsel, Office of General Counsel, 2379 Broad Street, Brooksville, FL 34604-6899, (352)796-7211, extension 4651

THE PRELIMINARY TEXT OF THE PROPOSED RULE DEVELOPMENT IS:

40D-8.041 Minimum Flows.

(1) through (5) No change.

(6) Minimum Flows for Crystal Springs Located Within the Hillsborough River Basin, Hillsborough County, Florida.

(a) The Minimum Flows are to ensure that the minimum hydrologic requirements of the water resources or ecology of the natural systems associated with the upper Hillsborough River are met.

(b) The Minimum Flow for Crystal Springs is stated as the flow measured by USGS physical measurements. Flows from Crystal Springs are calculated as the difference between upstream flow measurements at USGS Gage No. 02301990 – Hillsborough River Above Crystal Springs near Zephyrhills, FL and downstream flow measurements at USGS Gage No. 02302010 – Hillsborough River Below Crystal Springs near Zephyrhills, FL measurements and constitute the combined flow of the main spring vent and numerous smaller vents in the river channel. The minimum flow for the Crystal Springs complex is 46 cfs based on a 5-year running mean and median.

Specific Authority 373.044, 373.113, 373.171 FS. Law Implemented 373.036, 373.0361, 373.0395, 373.042, 373.0421 FS. History– Readopted 10-5-74, Amended 12-31-74, Formerly 16J-0.15, 40D-1.601, Amended 10-1-84, 8-7-00, 2-6-06, 4-6-06, 1-1-07, 11-25-07,_________.