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Lower Santa Fe & Ichetucknee Rivers & Associated Springs
Lower Santa Fe & Ichetucknee Rivers & Associated Springs MFLs

Minimum Flows and Levels (MFL) Presentations

Peer Review for the Lower Santa Fe and Ichetucknee Rivers and Associated Priority Springs MFL is being performed by the University of Florida (UF) Water Institute. A peer review kick-off meeting was held on campus on July 17, 2013. This was a noticed public meeting. A presentation (PDF, 7.3MB) of the MFL analysis methods and results was given.

The District held a Lower Santa Fe and Ichetucknee Rivers and Associated Priority Springs MFL Technical Workshop on July 2, 2013.  The workshop was a public meeting.  A presentation (PDF, 10.7MB) of the MFL analysis methods and results was given.  The results were based on the draft MFL analyses as of the meeting date and prior to subsequent scientific peer review.

An MFLs presentation (PDF, 3.86MB) was given at the Governing Board workshop on May 17, 2013. It gives an overview of the concepts behind establishment of adjusted historical flows or baseline flows and the use of these flows for setting minimum flows and levels (MFLs). The presentation is a brief summary of the final technical report. This presentation serves as an update to the Governing Board with final draft results indicating that the Santa Fe River will not be meeting its proposed MFL and that steps will be needed to prevent the Ichetucknee River from falling below the proposed MFL.

Board Resolution Requesting Florida Department of Environmental Protection Adoption

On June 11, 2013 the Suwannee River Water Management District Governing Board approved Resolution 2013-11 (PDF, 67KB). The resolution requested that the Department of Environmental Protection (FDEP) subject to Senate Bill 244 becoming law, adopt the Lower Santa Fe and Ichetucknee Rivers and Priority Springs Minimum Flows and Levels, Ichetucknee River and Priority Springs Prevention Strategy, and Lower Santa Fe River and Springs Recovery Strategy.

FDEP's has posted a rulemaking webpage for the Lower Santa Fe and Ichetucknee River and Associated Priority Springs minimum flows and levels at http://www.dep.state.fl.us/water/waterpolicy/mflrulemaking.htm.

Supporting Technical Data and Reports

Please note: Some files linked from this page will take a long time to download, especially with slower Internet connections such as dial-up.

***FINAL REPORT AVAILABLE***
The FINAL technical report for the Lower Santa Fe and Ichetucknee rivers and springs MFL is available for download. The report file size has been compressed for shorter download times. While the resolution should be adequate for online reading, please be aware that the quality of portions such as figures, may be reduced. A higher resolution file of the document may be obtained upon request.

Lower Santa Fe and Ichetucknee Rivers and Springs MFL Report (PDF, 15.8MB)

Available Appendices:

Surfacewater Modeling

The Suwannee River Water Management District (SRWMD) uses river simulation modeling to better understand how our rivers behave and to interpolate water level and flow information at locations distant from long-term gauges.

The tool used for this purpose is the Hydrologic Engineering Centers River Analysis System (HEC- RAS). HEC-RAS allows the performance of one-dimensional steady flow, unsteady flow, sediment transport/mobile bed computations, and water temperature modeling. The general model code is available from the U.S. Army Corps of Engineers at http://www.hec.usace.army.mil/software/hec-ras/.

The general model code is applied locally using site-specific information on bathymetry and river conditions.  The resulting models for specific rivers are available from the District as they are developed. The models used by the SRWMD for minimum flows and levels contain additional flow, stage, and survey data, as opposed to the Federal Emergency Management Agency (FEMA) HEC-RAS models, which are designed for flood study purposes only.

DISCLAIMER

The SRWMD prepares and uses this information for its own purposes and this information may not be suitable for other purposes. This information is provided as is. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the SRWMD. Although the computer program has been used by the SRWMD, no warranty, expressed or implied, is made by the SRWMD as to the accuracy and functionality of the program and related program material. Nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the SRWMD in connection therewith.

FINAL

Supporting Documents

Voluntary Peer Review

The District contracted with the University of Florida Water Institute to conduct a voluntary, independent scientific Peer Review for the Lower Santa Fe and Ichetucknee Rivers and Priority Springs MFLs. Emails and other documentation are available online from the Lower Santa Fe Peer Review folder in our Document Center.

Updated December 10, 2013: Download the Final Peer Review Report.

Resolution Document

The voluntary, independent scientific Peer Review was given significant weight in developing the Final Minimum Flows and Levels Report for the Lower Santa Fe and Ichetucknee Rivers and Priority Springs. Additionally, public comments were considered during Final Report development. The Resolution Document, linked below, contains the submitted public and peer review comments with the Districts response. The comments are organized by group in order to create efficiency in the District responses.

Updated December 17, 2013: Download the Resolution Document.

Recovery Strategy

The final version of the Recovery Strategy for the Lower Santa Fe and Ichetucknee Rivers and Priority Springs is available for review.

Updated March 11, 2014: Download the Recovery Strategy.

Contact John Good () or Clay Coarsey () at 386.362.1001 with questions.