Definitions, Minimum Flows for the St. Marks River Rise

 

WATER MANAGEMENT DISTRICTS

Northwest Florida Water Management District

RULE NOS.:RULE TITLES:

40A-8.021Definitions

40A-8.031Minimum Flows for the St. Marks River Rise

NOTICE OF CHANGE

Notice is hereby given that the following changes have been made to the proposed rule in accordance with subparagraph 120.54(3)(d)1., F.S., published in Vol. 45 No. 56, March 21, 2019 issue of the Florida Administrative Register.

These changes are in response to written comments submitted by the staff of the Joint Administrative Procedures Committee. The rule shall now read as follows:

MINIMUM FLOWS AND MINIMUM WATER LEVELS

40A-8.021 Definitions

(1) “Baseline period” means the period of record as documented in a technical report establishing a minimum flow or minimum water level.

(1)(2) “Minimum flow” means the limit at which further withdrawals would be significantly harmful to the water resources or ecology of the area. a flow or allowable change in flow, expressed in cubic feet per second combined with a temporal element. The temporal element is expressed as a duration, frequency, or return interval.

(3) through (6) renumbered (2) through (5) No Change.

Rulemaking Authority 373.044, 373.113 FS. Law Implemented 373.042 FS. History-New_________.

 

40A-8.031 Minimum Flow for the St. Marks River Rise

The Governing Board hereby establishes the following minimum flow. The Governing Board finds that the following minimum flow is the limit at which further withdrawals would be significantly harmful to the water resources or ecology of the area.

(1) The minimum flow for St. Marks River Rise is established as an allowable reduction of 33 cubic feet per second from the baseline period average daily spring flow. The baseline period is October 1, 1956 to November 27, 2017. The average daily spring flow is calculated as the difference between the surface water flow measured at St. Marks River Near Newport, FL and the St. Marks River Near Woodville, FL Estimated Daily Flow. The most recent 30-year period of average daily spring flows is used to evaluate whether the minimum flow is met.

Rulemaking Authority 373.044, 373.113 FS. Law Implemented 373.042, 373.0421, 373.103 FS. History-New _________.