5047606, 40D-8.041 - Florida Administrative Rules, Law, Code, Register

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Florida Department of State and Division of Library and Information Services

Notice: 5047606

Notice of Proposed Rule

Department:

WATER MANAGEMENT DISTRICTS

Division:

Southwest Florida Water Management District

Chapter:

WATER LEVELS AND RATES OF FLOW

Overview

RULE:

40D-8.041

Minimum Flows

PURPOSE:

The amendments establish minimum flows pursuant to Section 373.042, F.S., for the upper segment of the Braden River from Linger Lodge to Lorraine Road. This water body is listed on the District’s minimum flow and levels priority list for establishment of minimum flows. The minimum flows will be used in the District's permitting and resource management and development programs.

SUMMARY:

The District has identified seasonal low, medium and high flow periods for the Braden River. Short-term minimum flow compliance standards were developed for each of these periods using a “building block” approach. The Minimum Low Flow for the low flow period (Block 1, May 7 through June 19) is the natural flow minus 15% at the Braden River USGS gage near Lorraine.
For the Minimum High Flow for the high flow period (Block 3, June 20 through October 24), is a stepped flow reduction of 19% and 10% of the historic flows, with the step occurring at the 15% exceedance flow (54 cfs) at the Braden River USGS gage near Lorraine.
For the medium flow period (October 25 to May 6) it was determined that changes in habitat availability for fish and macroinvertebrates determined the Minimum Medium Flow. The Minimum Medium Flow is established as the flow less 11% at the Braden River USGS gage near Lorraine.
Five and ten year means and medians are proposed as long-term compliance standards.

RULEMAKING AUTHORITY:

373.044, 373.113, 373.171 FS.

LAW:

373.036, 373.0361, 373.042, 373.0421 FS.

PRINT PUBLISH DATE:

12/28/2007 Vol. 33/52

COMMENTS:

From 12/28/2007 To 1/18/2008 (21 Days)
The public comment period for this notice has already expired.

REFERENCE MATERIALS:

No reference(s).

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