Download Water Quality Data – Bridging the Gap Between Science and Management

Water Quality Data – Bridging the Gap
Between Science and Management
Waccamaw River Volunteer Monitoring
Annual Data Conference
2012
GROWTH OF STORMWATER
MANAGMENT PROGRAMS
Evolution of Stormwater
Management Programs
Post Construction Program Assessment
Promote LID
Restoration Projects
Require LID
Illicit Discharge Detection Programs
Monitoring
starts
0
5
1 permit cycle =
5 years
10
Years
15
20
Bridging the Gap between
Science and Management
• Illicit discharge detection
– Water Quality Standards
– Site specific norms
• Your cheat sheets
– Provisional reports
• Long-term trend detection
– It takes a lot of data
– And fancy statistics
• Area of active research
• We are not alone
• So what?
– Recreational impacts
– Aquatic Life impacts
• Macrobenthic invertebrates
• Provides benchmarks for
other programs
– Someone has to have the
best!
Merging data
• Most frequent sampling
• Next steps with collated data
– USGS (continuous)
– Few locations (+RF)
– Discharge
– New plots (XY)
– Correlations to establish
relationships
• Most sampling locations
– VM (biweekly)
– Even NC!
• Not cause and effect
– Trend analyses
• Detrending
• Most different analyses
– CCU River Gaging (biweekly)
– SC DHEC (every other month)
• Rain data
–
–
–
–
Cocorahs
National Climate Data Center
Nexrad
Weather Underground
Community Collaborative Rain, Hail and Snow Network.
1.
2.
3.
4.
5.
Red Bluff
(Kingston Lake)
Bucksville
Wacca Wache
Butler Island
(No probability based sites in WR)
NORTH CAROLINA
RF
Buck Creek
discharge of high
conductivity water
CW
EP
HG
Site Specific Norms
• Percentile rankings
• Box plots
• Based on data from
June 2006 to April 2011
• Close to 120 records at
most sites for most
parameters
Value > 90th percentile
90th percentile
75th percentile
Median
25th percentile
10th percentile
Value < 10th percentile
Provisional Report
No Water Quality Standard
High conductivity base flow in groundwater
75th percentile
Water flows
Water flows
Murrells Landing (Site 9): 4 miles north of Conway
Seasonal Mann-Kendall Trend Analysis
N = 2512 measurements from 1995 to 2013
p = 0.0000
1. Increased
Ditching and loss
of wetlands
increases flash
flooding
2. Lowering of
groundwater
table causes
increased acidity
3. Road dams
impound water
From Riggs, et al.
(2000)
Quick Annual Report
Monthly Mean Summertime DO
CW: 62% of daily means < 4 mg/L from 5/1/12 to 9/17/12
Annual Summertime Mean E. coli
Annual Mean E. coli
Annual Mean Total Dissolved Nitrogen
Annual Mean Turbidity
CWA
Ultimate Goal:
BIOINTEGRITY
Benthic macroinvertebrates
Species abundance and diversity measures combined into indices
Ecosystem specific: salt and freshwater
Pollution sensitive species indicate “good” water quality
Caddisfly Larvae
Stonefly Larvae
Hellgrammite
Beetle Larvae
Ephemeroptera-Plecoptera-Trichoptera (EPT)
Mayfly Larvae
Biological Impairment
Pollution insensitive species indicate “poor” water quality
Aquatic Worms
Midge Larvae
(Blood Worm)
& snails
Blackfly Larvae
Stressor
Precipitation
Dry
deposition
Industrial
Emissions
Riparian
Buffer
Wind Erosion
Discharge
Spray Drift
An agent that can induce
changes in organisms.
•Physical stressors
•Construction
Runoff
•Dams
•Noise
Impervious
Surfaces
Hydrologic
Modification
•Large fishing nets
•Habitat alteration
Erosion
Altered
Biological
Communities
•Chemical stressors
Infiltration
Infiltration
•Pesticides
•Industrial effluents
GW Recharge to and from Stream
•Acid deposition
•Biological stressors
ACUTE versus CHRONIC
•Invasive species
•Pathogens
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