Crystal River / Kings Bay SWIM Plan Sky Notestein Springs & Environmental Flows Section Quantifiable Objectives and Available Data

Rainbow River Quantifiable Objectives As presented at SCMC July 8 th, 2015 Water QualityTarget Water clarity in the river >100 feet 1 Nitrate concentration in the springs and river <0.35 mg/L 2 Water Quantity Minimum flows for the springs and river system TBD in Natural Systems Coverage of desirable submerged aquatic vegetation in the river >65% 4 Coverage of invasive aquatic vegetation (hydrilla/filamentous algae) in the river <10% 4 1 Based on Anastasiou 2006 and average river-wide data presented in Table 3 2 FDEP 2013 – Nutrient TMDL for Rainbow Springs Group and Rainbow Springs Group Run 3 SWFWMD 2015 Minimum Flows and Levels Priority List and Schedule 4 Based on 2011 Rainbow River Vegetation Evaluation (Atkins and DCWI 2012) and data presented in Table 4

Water QualityTarget Water clarity - bay wide Water clarity - spring areas >20 feet >60 feet 1 Total nitrogen concentration in the bay <0.28 mg/L 2 Total phosphorus concentration in the bay <0.032 mg/L 2 Chlorophyll concentration in the bay <2.0 µg/L 3 Water Quantity Minimum flows for the River and Bay system TBD in Natural Systems Coverage of desirable submerged aquatic vegetation in the bay >65% 5 Coverage of invasive aquatic vegetation in the bay (including filamentous algae) <10% 5 Percent of shoreline in natural condition around the bay (including living shorelines) >50% 1 Based on data presented in Figures 16 and 18 2 Bridger 2014 – Nutrient TMDL for Kings Bay (WBID 1341), Hunter Spring (WBID 1341C), House Spring (WBID 1341D), Idiot’s Delight Spring (WBID 1341F), Tarpon Spring (WBID 1341G), and Black Spring (WBID 1341H) 3 Based on data presented in Figures 16 and 19 4 SWFWMD 2015 Minimum Flows and Levels Priority List and Schedule 5 Based on data presented in Table 5 Kings Bay Quantifiable Objectives

Water Clarity in Kings Bay Water Clarity Target Bay wide Spring areas >20 feet >60 feet Water Clarity 2014 average Bay wide Spring areas ~ 9 feet ~ 20 feet Kings Bay Water Clarity

Bay Nutrient Targets TN TP < 0.28 mg/L < mg/L 2014 averages TN TP ~ 0.25 mg/L ~ mg/L Nutrient concentrations in Kings Bay

Bay Chlorophyll Targets Chlorophyll < 2 µg/L 2014 average Chlorophyll ~ 8.7 µg/L Chlorophyll (phytoplankton) concentrations in Kings Bay

Kings Bay submerged aquatic vegetation (SAV) coverage SAV Coverage Targets Native Invasive > 65 % < 10 % SAV Coverage 2013 average Native Invasive ~ 10 % ~ 19 %

Shoreline Targets Kings Bay > 50 % 2014 average Kings Bay TBD Shoreline in natural condition around King Bay

Action Item Approve the Quantifiable Objectives for the Crystal River / Kings Bay SWIM Plan