Alafia River Minimum Flows and Levels - Southwest Florida Water ...
Alafia River Minimum Flows and Levels - Southwest Florida Water ...
Alafia River Minimum Flows and Levels - Southwest Florida Water ...
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2.3.1 <strong>Florida</strong> <strong>River</strong> Flow Patterns <strong>and</strong> the Atlantic Multidecadal<br />
Oscillation .................................................................................................2-28<br />
2.3.1.1 Multidecadal periods of high <strong>and</strong> low flows ................................2-31<br />
2.3.1.2 Flow Trends – testing for a monotonic trend <strong>and</strong> a step trend ...2-32<br />
2.3.2 Benchmark period............................................................................2-33<br />
2.3.3 Seasonal Flow Patterns <strong>and</strong> the Building Block Approach ..............2-36<br />
2.3.4 <strong>Alafia</strong> <strong>River</strong> Flow Trends..................................................................2-39<br />
2.3.4.1 Gage Sites <strong>and</strong> Periods of Record.............................................2-39<br />
2.3.4.2 <strong>Alafia</strong> <strong>River</strong> <strong>Flows</strong>.......................................................................2-40<br />
2.3.4.3 Lithia Springs <strong>and</strong> Buckhorn Springs .........................................2-57<br />
2.3.4.3.1 Site Description (taken largely from Champion <strong>and</strong> Starks<br />
2001, <strong>and</strong> Jones <strong>and</strong> Upchurch 1993)................................................2-57<br />
2.3.4.3.2 Discharge from Lithia Springs Major <strong>and</strong> Buckhorn Springs<br />
Main....................................................................................................2-60<br />
Lithia Springs Major Discharge .......................................................2-60<br />
Buckhorn Springs Main Discharge..................................................2-63<br />
2.4 WATER CHEMISTRY ...................................................................................2-65<br />
2.4.1 Macronutrients: Phosphorus <strong>and</strong> Nitrogen.......................................2-66<br />
2.4.1.1 Phosphorus ................................................................................2-66<br />
2.4.1.2 Nitrogen......................................................................................2-73<br />
2.4.2 Potassium <strong>and</strong> Trend Analysis of Selected Chemical<br />
Constituents..............................................................................................2-76<br />
2.4.3 Summary .........................................................................................2-77<br />
Chapter 3 Ecological Resources of Concern <strong>and</strong> Key Habitat Indicators ............ 3-1<br />
3.1 GOAL – PREVENTING SIGNIFICANT HARM ......................................................3-1<br />
3.2 RESOURCES AND AREA OF CONCERN............................................................3-2<br />
3.3 RESOURCE MANAGEMENT GOALS AND KEY HABITAT INDICATORS ...................3-2<br />
3.3.1 Fish Passage <strong>and</strong> Recreational Use..................................................3-3<br />
3.3.2 Wetted Perimeter Inflection Point ......................................................3-4<br />
3.3.3 In-Channel Habitats for Fish <strong>and</strong> Macroinvertebrates........................3-4<br />
3.3.4 Woody Habitats .................................................................................3-5<br />
3.3.5 Hydrologic Connections Between the <strong>River</strong> Channel <strong>and</strong><br />
Floodplain ...................................................................................................3-6<br />
Chapter 4 Technical Approach for Establishing <strong>Minimum</strong> <strong>Flows</strong> <strong>and</strong> <strong>Levels</strong><br />
for the <strong>Alafia</strong> <strong>River</strong>, Lithia Springs Major <strong>and</strong> Buckhorn Springs Main ................ 4-1<br />
4.1 OVERVIEW ..................................................................................................4-1<br />
4.2 TRANSECT LOCATIONS AND FIELD SAMPLING OF INSTREAM AND FLOODPLAIN<br />
HABITATS..........................................................................................................4-1<br />
4.2.1 HEC-RAS Cross-Sections .................................................................4-3<br />
4.2.2 PHABSIM Cross Sections..................................................................4-4<br />
4.2.3 Instream Habitat Cross Sections .......................................................4-5<br />
4.2.4 Floodplain Vegetation Cross Sections ...............................................4-5<br />
4.2.5 Aquatic Invertebrate Community Assessment ...................................4-8<br />
4.2.6 Fish Community Assessment <strong>and</strong> Fish Diet Analyses.......................4-9<br />
4.3 MODELING APPROACHES..............................................................................4-9<br />
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