Loudoun County Water Resources Monitoring Presented to Loudoun Valley High School May 9, 2012 David...

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 Overview

8

Monitoring – Type, who, where

Stream assessment and impairments

Catoctin Watershed

Bacteria sampling

Historic monitoring in Purcellville Nature Park

Benthic Monitoring Identification


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

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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


11


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


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


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

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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


Stream Assessment and Impairments

17


18

"Not Supporting Designated Use" --> "Impaired" --> "Dirty"


19

Every two years Virginia Dept of Environmental Quality (DEQ) conducts water quality assessment

Loudoun CountyWater Resources Monitoring State Stream Monitoring

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Over 100,000 water chemistry and bacteria analyses since 1990’sOver 100,000 water chemistry and bacteria analyses since 1990’s


21Aquatic Life Use - Benthic Recreational Use - Bacteria


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


23

Ben

thic

and

Hab

itat

www.loudounwatershedwatch.org/maps


24

Ben

thic

onl

y


25

Hab

itat S

ite


26

Pho

to P

opup


Catoctin Watershed


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


37 Livestock stream exclusion practices

14 Cover crop


57 corrective actions

19 minor repairs

27 gravity field replacements

10 alternative drainfields

8 straight pipes eliminated

Grant funds $550,000


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


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EventsFamily Stream Day –

October (2002-2011)

Earth Day at Loudoun April (2009-2012)

Lucketts Potomac River Rangers


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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

Loudoun County Water Resources Monitoring Presented to Loudoun Valley High School May 9, 2012 David...

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