Lower Santa Fe & Ichetucknee Rivers & Springs
Upper Santa Fe River and Springs
You are here:
Permits & Rules
Minimum Flows & Levels
Santa Fe River
Lower Santa Fe & Ichetucknee Rivers & Springs
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
(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
(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.
(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
(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
Supporting Technical Data and Reports
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
Appendix 2-1 Database and Hydrology Report for Lower Santa Fe and Ichetucknee
Appendix 2-2 Descriptions of Priority Springs
Appendix 4-1 HEC-RAS Report
HEC-RAS Model Files
Steady State Production Runs
Appendix 4-2 HSW Memo
Appendix 5-1 Vegetation Survey Transects
Appendix 5-2 Water Surface Elevation-Flow Plots at Vegetation Transects
Appendix 5-3 Water Quality-Flow Plots
Appendix 5-4 Fish Passage Plots
Appendix 5-5 HSI Curves
Appendix 5-6 Weighted Usable Area-Flow Reduction Curves
Appendix 5-7 Email from Kent Smith (FWC) to Robbie McKinney (SRWMD) Regarding Manatees
Appendix 5-8 TMDL and BMAP Summaries
Appendix 5-9 RHABSIM Weighted Usable Area Flow Curves
Appendix 6-1 Method for Selection of MFL Control Points and Interpolation
Appendix 6-2 Basin Status Modeling and Estimation of Impacts
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
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.
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.
AMEC Fluvial Geomorphology Report
Atkins Floodplain Soils and Vegetation Sampling Report
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
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
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
Contact John Good (
) or Clay Coarsey (
Suwannee River Water Management District:
9225 CR 49, Live Oak FL 32060, 386.362.1001