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Alternate Surface Water Quality Standards
Waters with Site Specific Alternative Criteria

 

Water Body and Classification

(with link to map of SSAC area)

Type I Site Specific Alternative Criteria

For SSACs with seasonal limits, the default criteria in Rule 62-302.530, F.A.C., apply at other times of the year.

County(s)

Amelia River

Segment between the northern mouth of the river and the A1A crossing. Class III(m).

Dissolved Oxygen of 3.2 mg/L as a minimum during low tide from July 1 through September 30, and not below 4.0 mg/L during all other conditions. The 24-hr. average shall be greater than or equal to 5.0 mg/L. Applies July 1 through Sept. 30th. Nassau

Crystal River Canal System

Portions of the Main Channel, East and West Canals. Class III(f).

Dissolved Oxygen of 0.1 mg/L as a minimum.  Applies year round. Citrus

Everglades Protection Area

As defined in Section 373.4592(2)(i), F.S., and includes Water Conservation Areas 1, 2A, 2B, 3A, 3B, the Arthur R. Marshall National Wildlife Refuge, and Everglades National Park. Class III(f).

Note: this SSAC applies to fresh waters within the described area.

Dissolved Oxygen shall be evaluated based on an algorithm that uses sample collection time and water temperature to model the observed natural sinusoidal diel cycle and seasonal variability. This model provides a lower DO limit (DOL) for an individual monitoring station and is described by the equation:

DOLi = [- 3.70 – {1.50 • sine (2π/1440 • ti) – (0.30 • sine [4π/1440 • ti])} + 1/(0.0683 + 0.00198 • Ci + 5.24•10-6 • Ci2)] – 1.1

Where:

DOLi = lower limit for the ith annual DO measurement in milligrams per liter (mg/L)
ti
= sample collection time in minutes (Eastern Standard Time) since midnight of the ith annual DO measurement
Ci
= water temperature associated with the ith annual DO measurement in °C

Compliance with the SSAC is assessed based on a comparison between the annual average measured DO concentration and the average of the corresponding DO limits specified by the above equation.   Applies year round.

Palm Beach

Broward

Dade

Monroe

Fenholloway River

From river mile -0.1 to river mile 3.5. Class III(m).

Iron - No more than 10% of the iron measurements in this reach of the river shall be above 1.06 mg/L. Taylor

Hillsboro Canal Tributary

Belle Glade - canal receiving wastewater discharge from Sugar Cane Growers Cooperative Labor Camp #3 (NW corner Section 11, Range 37 East, Township 44 South, on NE side of Hillsboro Canal). Class IV.

Dissolved Oxygen of 2.6 mg/L annual average with 0.3 mg/L as a minimum.   Applies year round. Palm Beach

Holmes Creek

From the confluence with Little Creek to the SR 277 Creek crossing. Class III(f).

Dissolved Oxygen of 4.0 mg/L as a minimum from June 1 through September 30.

Jackson

Holmes

Myrtle Slough

SSAC 1 - In sections 19, 29, 30, 31, and 32, Township 40 south, Range 24 east.  Class III(f).

SSAC 2 - Between stations 1 and 3 as identified on the image.  Class III(f).

SSAC 1 - Dissolved Oxygen of 2.5 mg/L, applicable June through September.

SSAC 2 - Dissolved Oxygen level of 1.5 mg/L annual average with normal daily, seasonal and climatic fluctuations including natural excursions to a minimum of 0.1 mg/L.  Applies year round.

Charlotte

Peace Creek Canal

Lake Wales SSAC –South from SR 60 to the western section line of Section 15, Township 30 South, Range 27 East.   Class III(f).

Winter Haven SSAC - Downstream from SR 60.  Class III(f).

Lake Wales SSAC - Dissolved Oxygen of 3.0 mg/L as a minimum.  Applies year round.

Winter Haven SSAC - Dissolved Oxygen of 3.0 mg/L, maintaining normal daily and seasonal fluctuations. Applies 3 miles downstream from SR 60 for June, July and September, and 5 miles downstream during August.

Polk

Spring Creek

Headwater to River Mile 2.5. Class III(f).

Dissolved Oxygen of 2.5 mg/L as a minimum.  Applies year round. Taylor

Turkey Creek

(including tributaries) to the confluence with the South Prong of the St. Marys River, and the South Prong of the St. Marys River (including tributaries) from its headwaters to U.S. Route 90. Class III(f).

Annual average Dissolved Oxygen of 3.0 mg/L, with no more than 10% of the individual Dissolved Oxygen measurements below 1.35 mg/L on an annual basis.  Applies year round. Baker

Withlacoochee River

(Northern) (River Miles 19-25). Class III(f).

Dissolved Oxygen of 4.0 mg/L as a minimum from June 1 through October 30. Hamilton

 

Water Body and Classification

Type II Site Specific Alternative Criteria

For SSACs with seasonal limits, the default criteria in Rule 62-302.530, F.A.C., apply at other times of the year.

County(s)

Fenholloway River
(Transparency-Phytoplankton)

From river mile -0.1 to river mile 3.5. Class III(f & m).

The annual average compensation depth for photosynthetic activity for phytoplankton shall not be decreased greater than 44.3 percent from background conditions as determined by an annual average compensation depth of at least 0.66 meters at river mile 0.53 (station F06). This value must be based on a minimum of 12 measurements during times when the average flow at Cooey Island Bridge at river mile 7.15 (USGS gage 02325532) measures less than 200 cubic feet per second. Taylor

Fenholloway River (Nearshore)

Coastal waters (Apalachee Bay) as spatially defined by the coordinates (83° 49' 29.95" W, 29° 59' 38.70" N), (83° 45' 3.61" W, 29° 57' 22.10" N), (83° 47' 23.50" W, 29° 54' 5.01" N), and (83° 51' 45.47" W, 29° 56' 25.71" N). Class III(m).

The annual average down-welling light at 1 m depth at stations F10 (83° 47' 6.60" W, 29° 57' 4.20" N) and F11 (83° 48' 27.00" W, 29° 57' 38.40" N) shall be 27 percent or more of surface values based on a minimum of 12 measurements using a 2 pi sensor during times when the average flow at Hampton Springs Bridge (USGS gage 02325000 near Perry) is less than or equal to 60 cubic feet per second (after subtracting flows from permitted point sources). Taylor

Orange County

Eastern Water Reclamation Facility discharge wetlands. Class III(f).

PH of not greater than 8.5 standard units.   Applies year round. Orange

St. Johns River

Marine portions of the Lower St. Johns River and its tributaries between Julington Creek and the mouth of the river. Class III(m).

Dissolved Oxygen not less than a minimum concentration of 4.0 mg/L, and a Total Fractional Exposure not greater than 1.0 over an annual evaluation period as defined by the following equation:

Total Fractional Exposure = (Days between 4.0-<4.2 mg/L÷16 day Max) + (Days between 4.0-<4.2 mg/L÷21 day Max) + (Days between 4.0-<4.2 mg/L÷30 day Max) + (Days between 4.0-<4.2 mg/L÷47 day Max) + (Days between 4.0-<4.2 mg/L÷55 day Max)

or alternate view

Equation for Total Fractional Exposure

where the number of days in an interval is based on the daily average Dissolved Oxygen concentration.  Applies year round.

Duval

Clay

St. Johns


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Florida Department of Environmental Protection
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Tallahassee, FL 32399
850-245-8064
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Last updated: February 06, 2014

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