2.7.15. Hogan Creek

2.7.15.1. About Hogan Creek

Figure 2.47
Figure 2.48 The Hogan Creek Tributary (WBID 2252).
  • Downtown Jacksonville
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform with BMAP (2009)
  • Verified Impaired 2016 (final): None
  • WBID Area: 3.4 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.15.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Hogan Creek WBID 2252 (DEP 2014c) shown above. The filtered dataset was used to generate Table 2.13.

2.7.15.3. Discussion

Water quality data for Hogan Creek are shown in Table 2.13.  No data were available in STORET for 2015 or 2016, and only two measurements were performed in 2017, limiting the utility of these measurements in assessing the water quality in Hogan Creek.  Historical average phosphorus levels were higher than the recently updated WQC (DEP 2015c; DEP 2016e; DEP 2016k), and the average phosphorus level in 2017 was near the WQC. Chlorophyll-a and dissolved oxygen concentrations appear to be within acceptable limits.

A TMDL for fecal coliform in Hogan Creek was finalized in 2006 (Wainwright 2006d). (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Subsequently, a BMAP for Hogan Creek was legally adopted in December 2009 (DEP 2009b). Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.2. The 2016 Annual Progress Report for this BMAP listed 21 active, ongoing projects underway by FDOT and JEA and 2 projects completed in 2016 (pump station rebuilding by JEA, flood improvements by COJ)  to address the BMAP in the Hogan Creek watershed (DEP 2017c). FDEP reported improvement in the frequency of fecal coliform exceedances in the freshwater segment of Hogan Creek, but the last fecal coliform measurements in Hogan Creek available in STORET date back mainly to 2008, with a single measurement in 2011.

In 2012, COJ worked with the U.S. Army Corps of Engineers to investigate the potential to remediate and restore the aquatic ecosystem through removal of accumulated sediment, removal of exotic vegetation, and creation of wetland habitats.  Fourteen sites within the Hogan Creek watershed were under consideration for restoration, but sampling of ten of these sites in 2003 revealed hazardous, toxic, and radioactive waste contamination in both the creek itself and the adjacent lands.  Ash deposits dating back to the early 20th century can be found in the Hogan Creek watershed, and these are known sources of hazardous and toxic waste. Removal of these hazardous materials would prevent them from leaching into the creek and being taken up by plants and animals, but this (potentially extensive) work would need to be performed and paid for by either COJ or an organization contracted by COJ to do so.  The USACE elected not to proceed with any work or action until these hazardous materials were removed, after which the project could be reconsidered (USACE 2012a).

No recent measurements were available in STORET between 2015 and 2017 for the following parameter:

  • Fecal Coliform

Historical water quality data for this parameter in Hogan Creek are available in previous versions of the River Report.

Table 2.13 Water quality data for Hogan Creek (2015-2017).

 Water QualityAverage and Number of Samples º
ParameterCriteria201520162017
Dissolved Oxygen (mg/L)≥34% sat.
(≥3.0)
No dataNo data3.75
(0 of 2 samples)
Nitrate-nitrite N (mg/L)§§No dataNo data0.12
(2 samples)
Total Phosphorus (mg/L)<0.12No dataNo data0.11
(0 of 2 samples)
Chlorophyll-a (µg/L)<20No dataNo data8.15
(0 of 2 samples)
Arsenic (µg/L)≤50No dataNo data1.62
(0 of 2 samples)
Cadmium (µg/L)≤0.3No dataNo data0.02
(0 of 2 samples)
Copper (µg/L)≤9.3No dataNo data1.68
(0 of 2 samples)
Lead (µg/L)≤3.2No dataNo data1.90
(0 of 2 samples)
Nickel (µg/L)≤52No dataNo data0.46
(0 of 2 samples)
Silver (µg/L)≤0.07No dataNo data0.01
(0 of 2 samples)
Zinc (µg/L)≤120No dataNo data7.80
(0 of 2 samples)
Turbidity (NTU)<29No dataNo data4.60
(0 of 2 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
º = Number of samples below WQC for Dissolved Oxygen, Number of samples above WQC for all other parameters
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with () are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.
§ = No water quality criterion has been established for Nitrate-Nitrite nitrogen. No Total Nitrogen data were available in STORET for 2015-2017.