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Data Categories




Watershed physiographic data
Hydrographic data
Weather data
Watershed activities/use data and information
related to pollutant production
 Point sources and direct discharge data and
information
 Environmental monitoring data
 Stream flow data
Mill Creek Watershed
• Watershed area is 9308 acres
• Dominant Land Use:
– 61 % Improved pasture
– 22% Forest
– 10% Cropland
Targeting
TMDL Implementation



Monitoring Results
Spatial Analysis
Modeling
Anthropogenic Contributions
• Pollutant loading(s) from human controlled
sources:
–
–
–
–
–
–
Permitted Sources
Straight pipes
Septic systems
Land application of wastes
Livestock and pets
Others?
DEQ Bacteria Monitoring
Network
A
U
C
O
G
U
U
T
S
T
A
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Waynesboro
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$
Bacteria Monitoring Stations
Impaired Stream Segment
Impaired Watersheds
ia
ns
is C
Lew
Mi
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le
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1BLEW002.91
Lower Middle River
Polecat Draft
Lewis Creek
Moffett Creek
Upper Middle River
South River
Z
$
N
#
R
W
E
S
kC
r
uth
So
Ba
c
1BMDL060.48
1BMDL001.83
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Z
$
Staunton
$
Z
Z
$
Z
$
Z
$
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id
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R.
South
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1BSTH041.68
Fecal Coliform Standard
Violations
70
63%
62%
60
59%
50
43%
40
38%
% Exceed ances
36%
33%
30
26%
24%
20
19%
15%
13%
10
0
Upper M iddle
River
M offett Creek
Lewis Creek
Polecat Draft
Lower M iddle
River
Imp air ment
1998 Assessment
2002 Assessment
South River
Monitoring
• Purpose
–
–
–
–
Public perception
Baseline data for implementation
Spatial targeting of pollution control measures
Framework for triggering review of TMDL
• Design
– Fixed-frequency sampling and sample size
– Fecal coliform enumerations and nutrient
concentrations
– Bacterial Source Tracking (BST)
BACTERIA SOURCE TRACKING
(BST)
• Molecular or genotypic
• Biochemical or phenotypic
• Chemical
Holman’s Creek Stream Network
and Monitoring Stations
BST station
DEQ station
Middle River
BST Monitoring Network
A
U
C
O
rth
No
G
U
S
U
T
N
A
T
Y
R
.S
Fk
S.
Cr
Z
$
.
eR
l
d
id
M
Z
$
Z
$
Pole
Z
$
Staunton
r
is C
Lew
Z
$
Z
$
Ch
ris
tia
ns
C
Z
$
BST Monitoring Stations
Impaired Stream Segment
Impaired Watersheds
Lower Middle River
Polecat Draft
Lewis Creek
Moffett Creek
Upper Middle River
South River
N
Waynesboro
W
E
S
#
uth
So
R
r
Z
$
Z
$
Ba
ck
C
Mi
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le
R
Z
$
r
Z
$
Z
$
Z
$
Z
$
Z
$
R
Z
$
South
R
Br
#
Z
$
Z
$
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$$
Z
Z
cat Draft
Moffe $Z
tt
Jennings
na
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h
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nd
Bacteria Source Tracking
Preliminary Results*
• In all 20 sites livestock appears to be the
most prominent source identified.
• At 7 of these sites wildlife appears to be a
significant contributor.
• In 2 sites human sources appear to to be a
significant contributor.
*These results are undergoing further
evaluation and are subject to change.
Implementation:
Targeting Septic Programs
517
Non-Sewered
Building
300’
895
Buildings
Sewer
Footprints
Buffer
within
Buildings
300’
(1,363
of
Stream
Buildings)
Stream
or
Sinkhole
Implementation:
Monitoring and Modeling to Evaluate Targeting
Strategy (Results of first 2 years)
Modeled
Violations (Nontargeted)
Modeled
Violations
(Targeted)
North Fork
Blackwater R.
74%
29%
Middle BWR
61%
40%
Dry River
54%
31%
Impairment
Percent Fecal Coliform
Reductions in Page Brook
5000
(42,400)
4000
3000
88.8%
2000
Summer 1997
Summer 1998
Summer 1999
96.2%
98.9%
60.3%
63.0%
89.7%
1000
0
PB 10
PB 12
PB 16
3 year overall
average reduction
= 83.9%
Data and Information Needs…
•
•
•
•
Watershed physiographic data
Hydrographic data
Weather data
Watershed activities/use data and information related
to pollutant production
• Point sources and direct discharge data and
information
• Environmental monitoring data – surface and ground
water
• Stream flow data