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Loudoun County Water Resources
Monitoring
Presented to
Loudoun Valley High SchoolMay 9, 2012
David Ward and Scott Sandberg
Loudoun County Department of Building & Development
Loudoun CountyWater Resources Monitoring
Loudoun CountyWater Resources Monitoring
Loudoun CountyWater Resources Monitoring
Loudoun CountyWater Resources Monitoring
Loudoun CountyWater Resources Monitoring
Loudoun CountyWater Resources Monitoring
Loudoun CountyWater Resources Monitoring Overview
8
Monitoring – Type, who, where
Stream assessment and impairments
Catoctin Watershed
Bacteria sampling
Historic monitoring in Purcellville Nature Park
Benthic Monitoring Identification
Loudoun CountyWater Resources Monitoring
Types of Monitoring
9
Stream assessment and conditions (benthic/habitat)
Groundwater levels and groundwater quality
Surface water streamflow rates and surface water quality
Precipitation / rainfall
Loudoun CountyWater Resources Monitoring Who Monitors
10
Federal Government – US Environmental protection Agency
State - Virginia Department of Environmental Quality
Local Government – Loudoun County, Soil & Water Conservation District
Citizen Groups – Loudoun Wildlife Conservancy, Goose Creek Association, student groups and other Loudoun Watershed Watch Partners
Loudoun CountyWater Resources Monitoring
11
Loudoun CountyWater Resources Monitoring
17 major watersheds
1,500+ miles of perennial streams
Bull Run and Cub Run drain south to Occoquan, all others drain N/E to Potomac.
0 2 4 6 8 101 Miles
SugarlandRunBroad
Run
Directto
Potomac
BullRun
CubRun
North ForkGoose Creek
BeaverdamCreek
UpperGoose Creek
LowerGooseCreek
CatoctinCreek
North ForkCatoctin Creek
South ForkCatoctin Creek
ClarksRun
QuarterBranch
DutchmanCreek
PineyRun
LimestoneBranch
MajorWatersheds
Loudoun CountyWater Resources Monitoring
Precipitation / rain
Stream flow
Groundwater levels
Groundwater quality
Stream assessment
Stream water quality
+ Volunteer data0 2 4 6 8 101 Miles
MONITORING SITES
Precipitation
Stream Flow
Groundwater
NWS COOP
USGS
County Wells
USGS Wells
Loudoun CountyWater Resources Monitoring
14
"J
"J
"J"J
"J
"J
Lincoln
Catoctin
Sterling RCS
Mount Weather
Washington Dulles
Limestone/Leesburg
0 2 4 6 8 101 Miles
¯Precipitation Station(NWS-COOP)
"J
"JRain Station(USGS)
/Lovettsville
0
10
20
30
40
50
60
70
PR
EC
IPIT
AT
ION
, IN
CH
ES
1980 1985 1990 1995 2000 2005 2010
3-year m oving average
D U LLES A IRPO RT
30-year annual m edian of 40.49 inches(1980 - 2009)
39.1
inch
es
Real-time data at USGSReal-time data at USGS
Loudoun CountyWater Resources Monitoring Groundwater Level
15
VRGO-01
EVGN-01
LWTP-01
USGS-03
USGS-02
USGS-01
THPK-01
ALPK-01
BRPK-01
HRKN-01
TSPG-01
WDGR-01
MGRD-01
BOLN-12
BRCS-01
RGER-01
WFRD-01
HARM-01
0 2 4 6 8 101 Miles
¯
WRMP Monitoring Well Siteand County ID#
80
60
40
20
0
GR
OU
ND
WA
TE
R L
EV
EL
IN
FE
ET
BE
LO
W T
OP
OF
CA
SIN
G
1/1/09 5/1/09 9/1/09 1/1/10 5/1/10 9/1/10 1/1/11
M O NTH / DAY / YEAR
W DR G -01
W FRD-01
RG ER-01
H ARM -01
TSPG -01
35
30
25
20
15
10
5
0
GR
OU
ND
WA
TE
R L
EV
EL
IN F
EE
TB
ELO
W T
OP
OF
CA
SIN
G
0
1
2
3
4
5
6
PR
EC
IPIT
AT
ION
, IN
CH
ES
1/1/10 3/1/10 5/1/10 7/1/10 9/1/10 11/1/10M O NTH / DAY / YEAR
G roundwater Levelat W aterford W ell
(W FRD -01)
Daily Precip ita tionat Leesburg
1/1/11
Loudoun CountyWater Resources Monitoring Streamflow
16
#*
#*#*#*
#*
#*
#*#* #*
#*
#*
#*
#*
0 2 4 6 8 101 Miles
¯
Goose Creek(Middleburg)
North ForkGoose Creek
BeaverdamCreek
Goose Creek(Leesburg)
North ForkCatoctin
Creek
LimestoneBranch
BroadRun
PineyRun
South ForkCatoctin Creek
CatoctinCreek
(Taylorstown)
#*Stream Gauge Stationand Name
BullRun
Harpers FerryPotomac River
Point of RocksPotomac River
#* Other Stream Gauges
0.1
1
10
100
1000
10000
100000
DIS
CH
AR
GE
, FE
ET
3 /
SE
C
JAN FEB M AR APR M AY JU N JU L AU G SEP O C T N O V D EC
U SG S S tream G auge, G oose C reek N ear Leesburg (S ite ID # 01644000)
M ean daily flowduring 2010
M ean daily flow duration curve statisticsfor m onths during period 1980 - 2009
H ighest25%
(Above N orm al)
M idd le50%
(N orm al)
M ean Low est25%
(Below N orm al)
Real-time data at USGSReal-time data at USGS
Loudoun CountyWater Resources Monitoring
Stream Assessment and Impairments
17
Loudoun CountyWater Resources Monitoring
18
"Not Supporting Designated Use" --> "Impaired" --> "Dirty"
Loudoun CountyWater Resources Monitoring
19
Every two years Virginia Dept of Environmental Quality (DEQ) conducts water quality assessment
Loudoun CountyWater Resources Monitoring State Stream Monitoring
20
Over 100,000 water chemistry and bacteria analyses since 1990’sOver 100,000 water chemistry and bacteria analyses since 1990’s
Loudoun CountyWater Resources Monitoring
21Aquatic Life Use - Benthic Recreational Use - Bacteria
Loudoun CountyWater Resources Monitoring
22Based on a probability-based benthic survey at 178 locations more
than 78 percent of streams are “stressed” or “severely stressed” .
2009 Stream AssessmentInteractive map at www.loudounwatershedwatch.org/maps
Loudoun CountyWater Resources Monitoring
23
Ben
thic
and
Hab
itat
www.loudounwatershedwatch.org/maps
Loudoun CountyWater Resources Monitoring
24
Ben
thic
onl
y
Loudoun CountyWater Resources Monitoring
25
Hab
itat S
ite
Loudoun CountyWater Resources Monitoring
26
Pho
to P
opup
Loudoun CountyWater Resources Monitoring
Catoctin Watershed
Loudoun CountyWater Resources Monitoring
Citizen Volunteer Stakeholder’s Overall Contributions – 2005-2009Citizen volunteer organizations have made a
substantial contribution to the TMDL IP:Community Outreach and Education – publications, website,
meetings, etc. = 1200 hrs volunteer timeRiparian Tree Planting and Stream Clean-up Projects = 1500
hrs volunteer timeStream Monitoring – 90 sampling days, 970 samples, 1500 lab
analyses = 1500 hrs volunteer time
Recognition -- LWW/CWP received the 2007 Outstanding Organization Award from Virginia Citizens for Water Quality
Loudoun CountyWater Resources Monitoring
37 Livestock stream exclusion practices
14 Cover crop
Loudoun CountyWater Resources Monitoring
57 corrective actions
19 minor repairs
27 gravity field replacements
10 alternative drainfields
8 straight pipes eliminated
Grant funds $550,000
Loudoun CountyWater Resources Monitoring
Lessons Learned – Stream Monitoring
Volunteer citizen group can conduct stream monitoring for a TMDL IP
Assessing trends or significant changes requires several years of data
A monitoring program based on Coliscan Easygel costs $1200/year, and grant funds are typically available
Loudoun CountyWater Resources Monitoring Nature Park
32
Loudoun CountyWater Resources Monitoring
33
Loudoun CountyWater Resources Monitoring
EventsFamily Stream Day –
October (2002-2011)
Earth Day at Loudoun April (2009-2012)
Lucketts Potomac River Rangers
Loudoun CountyWater Resources Monitoring
35
Loudoun CountyWater Resources Monitoring
Contact:David Ward ([email protected]) Scott Sandberg ([email protected] )Loudoun County Dept. of Building & Development703-777-0220
Additional information is available atwww.loudoun.gov/waterresources