Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects ›...
Transcript of Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects ›...
![Page 1: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/1.jpg)
Instream-Flow StudyNorth Fork ShenandoahRiver
Jennifer L. Krstolic and Donald C. Hayes
![Page 2: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/2.jpg)
Knowledge Gained
Physical Habitat Classified
Fish Species Documented
Low-Flow Water Qualityhttp://water.usgs.gov/pubs/sir/2004/5153/
Stage-Discharge Relation
Habitat-Flow Relation
![Page 3: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/3.jpg)
Water-Quality During Low-Flow Periods
Diurnal patterns of DO showed large fluctuations
pH values higher than State standard found only at downstream end
Water temperatures within State standards
![Page 4: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/4.jpg)
Water-Quality Questions Raised
How does DO fluctuate during normal summer flows?
What processes most influence pH values?
How does ground-water discharge affect water temperature?
![Page 5: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/5.jpg)
Modeling Results
Usable Area Totals for the Upper North Fork Shenandoah River
0
5000
10000
15000
20000
25000
30000
35000
10 100 1000 10000
ST RASBURG FLOWS I N CFS
Fis
h G
uild
Use
able
Are
a
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
5,000
Can
oein
g U
seab
le A
rea
Riff le Fast Generalist Pool Run Pool Cover Canoeing
Normal Range of f lows 112 - 272 cfs Aug, Sept, Oct
![Page 6: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/6.jpg)
Interpretation
Cootes Store days per month less than 1.6 cfs (1 MGD)90 percent exceedence value
0
5
10
15
20
25
30
35
1925
1930
1935
1940
1945
1950
1955
1960
1965
1970
1975
1980
1985
1990
1995
2000
YEAR
NU
MB
ER O
F D
AYS
july 1.6 cfs or less August 1.6 cfs or less September 1.6 cfs or less October 1.6 cfs or less
![Page 7: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/7.jpg)
Application: Drought Flows and Habitat
Weighted Usable Area Totals for the Upper North Fork Shenandoah River Reach Represented by the USGS Gaging Station at Cootes Store, Va.
0
5000
10000
15000
20000
25000
30000
0.1 1 10 100 1000 10000LOG OF FLOW IN CFS
WU
A H
AB
ITA
T U
NIT
S
0
30000
60000
90000
120000
WU
A C
AN
OEI
NG
Riffle Guild Habitat Curve Fast Generalist Guild Habitat Curve Pool Run Guild Habitat CurvePool Cover Guild Habitat Curve 90% canoeing
Normal Range of flows 3.6 - 42 cfs
![Page 8: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/8.jpg)
Next Steps for the North Fork
Adoption of Thresholds and proposal to policy makers
Un-permitted Water Withdrawal Study
Further investigation into water quality on the North Fork
![Page 9: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/9.jpg)
Instream-Flow StudySouth Fork ShenandoahRiver
![Page 10: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/10.jpg)
Proposed South Fork Research
Sister study with similar research components
PHABSIM modeling with additional water-quality monitoring
Connecting surface-water and ground-water research efforts
![Page 11: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/11.jpg)
Proposed South Fork Research
![Page 12: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/12.jpg)
Proposed South Fork Research
Physical Habitat Classification with more geomorphology
Low-Flow and Normal-Flow Water-Quality studies
Habitat-Flow Relation tied to stream gages for three sections of the South Fork Shenandoah River
Transfer of North Fork basin and flow characteristics to the South Fork tributaries
![Page 13: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/13.jpg)
Proposed South Fork Research Timeline
2005 - 2007
Physical-Habitat Mapping, Water-Quality Survey, Reach Selection, Transfer Basin Characteristics, Publications
2008 - 2010
Hydraulic-Data collection, Modeling, Analysis, Publication
![Page 14: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/14.jpg)
South Fork Companion Investigations
Fish Habitat Needs-Assessment
Estimated Un-permitted Water Withdrawal Study
![Page 15: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/15.jpg)
Shenandoah Valley Water Withdrawals Pilot Study
Identify and document actual use by permit holders
Locate unregulated water users
Apply methods to measure and estimate water use
![Page 16: Instream-Flow Study North Fork Shenandoah River - …va.water.usgs.gov › projects › NF_SFTalk_10_25_2004.pdfRepresented by the USGS Gaging Station at Cootes Store, Va. 0 5000 10000](https://reader033.fdocuments.us/reader033/viewer/2022042315/5f039be27e708231d409e52f/html5/thumbnails/16.jpg)
Questions?