Summary of 2014 Kentucky River Watershed Watch Sampling Results - - PowerPoint PPT Presentation

Summary of 2014 Kentucky River Watershed Watch Sampling Results

What and when?

Herbicide 16 sites in May Pathogens 115 sites in July 46 re-sampled sites in August Chemicals and Nutrients 85 sites in September Metals 50 sites in September

87 115 155 166 207 157 202 248 231 197 176 189 145 134 144 166

50 100 150 200 250 300 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

# of Sites

Total # of KRWW Sites Sampled by Year

Where?

2013 Sampling Sites

Field Chemistry

Dissolved Oxygen

– Aquatic Life Standard = 5 mg/L – 43 of 243 readings (18%) < 5 mg/L

pH

– Aquatic Life Standard = 6 to 9 – Three readings < 6 and two readings > 9

Temperature

– One reading > than Aquatic Life Std. of 31.7°C

Conductivity – Unofficial Aquatic Life Std. of 500 microsiemens/cm

– 161 of 263 readings (61%) > 500 µS/cm

Herbicide: Triazines

Widely-used agricultural pesticide to control broadleaf weeds. Can be applied before and after planting crops. Commonly used on corn, sugarcane, sorghum

• crops. Highly persistent in soil.

Associated with concerns about human reproductive effects through drinking water.

Triazine Water Quality Standards

EPA Standards only (no Kentucky stds.): Drinking Water Std. = 3.0 micrograms/L Chronic Aquatic Life Std. = 12 micrograms/L Acute Aquatic Life Std. = 350 micrograms/L Triazine detections at 5 of 16 sites. No detections > Standards

Herbicide Results

Elkhorn Creek Kentucky River Red Lick Creek Station Camp Creek

Pathogens: E. coli

Can indicate presence of pathogens that may cause illness or infections in people.

Sources: Failing septic systems Straight pipes Leaking sewage lines Livestock Wildlife, pets

• E. coli Water Quality Standards

Swimming Standard = 240 cfu/100 ml

(instantaneous)

Standards apply during Recreation Season from May 1 to October 31.

Synoptic Pathogens

(Sampling Dates:7/11/14-7/15/14)

45%

• f sites out of

compliance with safe swimming standards

Follow Up Pathogens

(Sampling Dates 8/7/14-8/9/14)

93%

• f sites out of

compliance with safe swimming standards

Best Management Practices for Pathogens

Maintain septic systems. Increase municipal sewer line coverage, and repair sewer line leaks. Fence livestock from waterways. Maintain riparian (streamside) vegetation buffers.

Fall Sampling Event

NUTRIENT ANALYSIS CRITERIA:

($95/sample –Conductivity, Total Nitrogen, Total Phosphorus, Chloride, Sulfate, Nitrate, Alkalinity and Total Suspended Solids)

Offered for all sites

METALS ANALYIS CRITERIA:

($70/sample –30 metals)

Offered for:

• New sampling sites
• Eastern Kentucky sites
• A few other historically high-metals sites

Nutrients

Nitrogen (Total Nitrogen, Nitrate-Nitrogen)

Phosphorus (Total Phosphorus)

What’s the problem?? High nutrients lead to algal blooms  Algae die off  Oxygen consumed as algae decomposes  DECREASED DISSOLVED OXYGEN LEVELS are bad for aquatic life. Also, can cause taste and odor problems in drinking water or can cause “Blue baby” disease, when oxygen is not transferred effectively throughout the body.

Total Nitrogen and Nitrate-Nitrogen

Total Nitrogen Aquatic Life Benchmark = 3 mg/L 29 of 110 2014 TN results > 3 mg/L Nitrate-Nitrogen Drinking Water Supply

• Std. = 10 mg/L

0 of 110 Nitrate Results > 10 mg/L

Total Nitrogen

(Sampling Dates: 9/11/14 – 9/18/14)

26%

• f sites above

recommended limit for aquatic life

Total Phosphorus

Central Kentucky  higher than average natural levels of phosphorus in limestone bedrock & soils

Aquatic Life Benchmark for Phosphorus = 0.3 mg/L

34 of 110 Phosphorus Results > 0.3 mg/L

Used in plant photosynthesis

Phosphorus

(Sampling Dates: 9/11/14 – 9/18/14)

31%

• f sites above

recommended limit for aquatic life

Conductivity

Measure of total dissolved minerals and ions OR the ability of water to carry an electrical current. Levels directly affect aquatic life support, negative impacts observed at 300-500 microSiemens (µS)/centimeter. Can serve as indicator of sewage input, mining runoff

• r other pollutant sources.

KRWW Benchmark = 500 µS/cm

Conductivity Results

61% of field readings > 500 micromhos/cm 65% of lab readings > 500 micromhos/cm

Metals

28 different metals analyzed for 50 sites Only 14 metals w/ associated Water Quality Standards 12 have Drinking Water Supply Standard (DWS) 10 have Warm Water Aquatic Habitat Standard (or AL for Aquatic Life)

Metal Readings > Standards

Metal Analyte # of Drinking Water Standard Exceedances # of Acute (short-term) Aquatic Life Exceedances # of Chronic (long-term) Aquatic Life Exceedances Site with Highest Reading Aluminum 13 N/A #1209 Beryllium 1 N/A N/A #1209 Copper 2 1 #3353 Iron 29 17 9 #1209 Lead 1 1 #1209 Nickel 2 2 2 #1209 Thalium 1 N/A N/A #921 Zinc 3 3 #1209

Habitat and Biological Results

8 Sites Assessed for Habitat and Biology Habitat: Biology:

4 good

0 good 2 fair 7 fair 2 poor 1 poor

Biological and Habitat Assessments

Summary of Results

• Lists all sites with location descriptions &

sampler names.

• Provides subjective rating of good, fair, and

poor for each water quality category.

• Sites of concern noted by shading.

2014 Sites of Concern ! South Elkhorn Creek Watershed (Fayette Co.)

Wolf Run Watershed

Sites #915, #1128, #1132, #1135, #1137, #1138, #1139, #3059

Shannon Run Watershed (Woodford Co.)

Site #1048

! Glenn’s Creek Watershed (Woodford Co.)

Sites #823, #954

! West Hickman Creek Watershed (Fayette Co.)

Sites #1020, #1021

2014 Sites of Concern ! Mock’s Branch Watershed (Boyle Co.)

Site #3133

! Kentucky River Palisades (Woodford Co.)

Site #954

! Clear Creek (Woodford Co.)

Site #922

! Lower Howards Creek (Clark Co.)

Site #3282

! Carr Fork (Perry Co.)

Site #875

2014 Sites of Concern

! Rockhouse Creek (Letcher Co.) Site #3084 ! North Fork Kentucky River Headwaters (Letcher Co.) Sites #802, 803, 1151, 848, 1209, 1242, 1248

2014 KRWW Sites & Watersheds of Concern