Christina Basin Trends, 1995-2010 Population Land Use Water - - PowerPoint PPT Presentation

▶
christina basin trends 1995 2010
SMART_READER_LITE
LIVE PREVIEW

Christina Basin Trends, 1995-2010 Population Land Use Water - - PowerPoint PPT Presentation

Sep 30, 2022 41 likes •802 views

Christina Basin Trends, 1995-2010 Population Land Use Water Quality Water Temperature Streamflow Compiled by A. Homsey, S. Chatterson, E. McVey. S. Mack, M. Narvaez, and G. Kauffman (University of Delaware) Christina

slide-1
SLIDE 1

Christina Basin Trends, 1995-2010

  • Population
  • Land Use
  • Water Quality
  • Water Temperature
  • Streamflow

Compiled by A. Homsey, S. Chatterson, E. McVey.

  • S. Mack, M. Narvaez, and G. Kauffman (University of Delaware)
slide-2
SLIDE 2
slide-3
SLIDE 3

Christina Basin Clean Water Partnership

Policy Committee

DRBC, USEPA, Del. DNREC, Pa. DEP

Coordinating Committee

  • Del. Co-coordinator: DNS, WRA
  • Pa. Co-coordinator: CCWRA, CCCD

Task Force

Chair: BVA Interstate

  • Brandywine Conservancy
  • Brandywine Valley Association (BVA)
  • Delaware River Basin Commission (DRBC)
  • Partnership for the Delaware Estuary
  • Red Clay Valley Association (RCVA)
  • United States Department of Agriculture

Natural Resources Conservation Service (NRCS)

  • United States Environmental Protection

Agency (USEPA)

  • United States Geological Survey (USGS)
  • United States National Park Service (NPS)
  • White Clay Creek Watershed Association
  • White Clay Creek Wild and Scenic

Watershed Management Committee Pennsylvania

  • Chester County Conservation

District (CCCD)

  • Chester County Health

Department

  • Chester County Planning

Commission

  • Chester County Water Resources

Authority (CCWRA)

  • Pennsylvania Department of

Conservation and Natural Resources (Pa. DCNR)

  • Pennsyvlania Department of the

Environment (Pa. DEP) Delaware

  • Christina Conservancy
  • City of Newark
  • City of Wilmington
  • Delaware Department of

Natural Resources and Environmental Control (DNREC)

  • Delaware Nature Society (DNS)
  • New Castle Conservation

District

  • New Castle County Dept. of

Special Services

  • University of Delaware, Institute

for Public Administration, Water Resources Agency (WRA)

Partner Organizations Ad Hoc Committees (as needed)

slide-4
SLIDE 4

Christina Basin Population

Source: U. S. Census

slide-5
SLIDE 5
slide-6
SLIDE 6

Christina Basin Population, 2010

Brandywine Cr. 246,702, 42% White Clay Cr. 123,506, 21% Red Clay Cr. 46,893, 8% Christina R. 174,196, 29%

slide-7
SLIDE 7

Christina Basin Population Change, 2000-2010

10,723 31,091 426 5,000 10,000 15,000 20,000 25,000 30,000 35,000 Delaware Pennsylvania Maryland

Population change

slide-8
SLIDE 8

Christina Basin Population Change, 2000-2010 25,289 7,761 4,263 4,927 42,240 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000

Brandywine Creek Christina River Red Clay Creek White Clay Creek Christina Basin Population change

slide-9
SLIDE 9

Christina Basin Population Change, 2000-2010

3,339 3,228 5,782 7,204 1,035 426 131

  • 855

21,950

  • 5,000

5,000 10,000 15,000 20,000 25,000

White Clay (DE) Christina (PA) Christina (MD) Red Clay (DE) Red Clay (PA) Brandywine (DE) White Clay (PA) Christina (DE) Brandywine (PA)

slide-10
SLIDE 10
  • 3,500
  • 2,500
  • 1,500
  • 500

500 1,500 2,500 3,500

C 6 T i d a l C h r i s t i n a R . W 5 M i l l C r e e k R 5 b e l

  • w

W

  • d

d a l e C 2 M u d d y R u n R 4 a b

  • v

e W

  • d

d a l e W 8 a b

  • v

e N e w a r k B 6 D

  • e

R u n W 1 T i d a l W h i t e C l a y C r . R 3 B u r r

  • u

g h s R u n B 7 B r

  • a

d C r e e k B 1 W B H

  • n

e y B r

  • k

B 5 B u c k R u n R 2 E a s t B r a n c h R 4 a b

  • v

e W

  • d

d a l e W 2 M i d d l e B r a n c h B 3 W B C

  • a

t e s v i l l e B 1 7 t h r

  • u

g h W i l m i n g t

  • n

W 6 P i k e C r e e k W 4 E B b e l

  • w

A v

  • n

d a l e R 1 W e s t B r a n c h C 2 M u d d y R u n B 1 2 B e a v e r C r e e k B 1 4 a b

  • v

e C h a d d s F

  • r

d B 1 3 V a l l e y C r e e k

Christina Basin Population Change, 2000-2010

slide-11
SLIDE 11

Christina Basin Land Use

Source: NOAA CSC

slide-12
SLIDE 12

Christina Basin Land Use, 2005

Urban/ Suburban 28%

Forest/ Wetland 33% Ag 38%

Water 1%

slide-13
SLIDE 13

Brandywine Creek Land Use 2005

Urban/ Suburban 18% Agricultur e 46% Forest/ Wetland 36% Water 1%

Red Clay Creek Land Use 2005

Urban/ Suburban 27% Water 1% Agricultur e 39% Forest/ Wetland 33%

White Clay Creek Land Use 2005

Urban/ Suburban 34% Agricultur e 36% Forest/ Wetland, 30% Water 0%

Christina River Land Use 2005

Urban/ Suburban 58% Agriculture 15% Forest/ Wetland 26% Water 1%

slide-14
SLIDE 14

Christina Basin Land Use Change, 1996 - 2005

9.61

  • 3.06
  • 6.72

10 8 6 4 2 2 4 6 8 10

Area (sq mi)

Urban/Suburban Agriculture Forest/Wetland

slide-15
SLIDE 15

Christina Basin Land Use Change, 1995 - 2010

5 4 3 2 1 1 2 3 4 5

Brandywine Christina Red Clay White Clay

Area (sq mi)

Urban/Suburban Agriculture Forest/Wetland

slide-16
SLIDE 16

Christina Basin Land Use by State and Watershed, 2005

50 100 150 200 250 300 350

B r a n d y w i n e D E B r a n d y w i n e P A C h r i s t i n a D E C h r i s t i n a M D C h r i s t i n a P A R e d C l a y D E R e d C l a y P A W h i t e C l a y D E W h i t e C l a y P A

Area (sq mi)

Urban/Suburban Agriculture Forest/Wetland

slide-17
SLIDE 17
slide-18
SLIDE 18
slide-19
SLIDE 19
slide-20
SLIDE 20
slide-21
SLIDE 21
slide-22
SLIDE 22

Christina Basin Water Quality

  • Dissolved Oxygen
  • Total Suspended Sediment
  • Enterococcus Bacteria
  • Nitrogen
  • Phosphorus

Source: DNREC STORET Monitoring Stations

slide-23
SLIDE 23

Brandywine Cr. at Footbridge (104011) Red Clay Cr. at Stanton (103011) White Clay Cr. at Old Rte 7 Br. (105071) Christina R. at Wilmington (106291)

slide-24
SLIDE 24
slide-25
SLIDE 25
slide-26
SLIDE 26
slide-27
SLIDE 27
slide-28
SLIDE 28
slide-29
SLIDE 29
slide-30
SLIDE 30
slide-31
SLIDE 31
slide-32
SLIDE 32
slide-33
SLIDE 33
slide-34
SLIDE 34
slide-35
SLIDE 35
slide-36
SLIDE 36
slide-37
SLIDE 37
slide-38
SLIDE 38
slide-39
SLIDE 39
slide-40
SLIDE 40
slide-41
SLIDE 41
slide-42
SLIDE 42
slide-43
SLIDE 43
slide-44
SLIDE 44
slide-45
SLIDE 45
slide-46
SLIDE 46
slide-47
SLIDE 47
slide-48
SLIDE 48
slide-49
SLIDE 49
slide-50
SLIDE 50
slide-51
SLIDE 51
slide-52
SLIDE 52
slide-53
SLIDE 53
slide-54
SLIDE 54
slide-55
SLIDE 55
slide-56
SLIDE 56
slide-57
SLIDE 57
slide-58
SLIDE 58
slide-59
SLIDE 59
slide-60
SLIDE 60
slide-61
SLIDE 61
slide-62
SLIDE 62
slide-63
SLIDE 63
slide-64
SLIDE 64
slide-65
SLIDE 65

Water Temperature

slide-66
SLIDE 66
slide-67
SLIDE 67

Streamflow

  • Annual Low Flow (Drought)
  • Annual Peak Flow (Flood)
slide-68
SLIDE 68

Brandywine Creek at Wilmington Annual Low Streamflow

52 121 98 121 52 137 90 119 204 90 124 94 98 198 35

20 40 60 80 100 120 140 160 180 200 220

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Streamflow (cfs)

7Q10

slide-69
SLIDE 69

1% 10%

slide-70
SLIDE 70

Red Clay Creek at Stanton Annual Low Streamflow

7 39 17 12 8 18 14 7 28 40 18 24 16 17 21

10 20 30 40 50

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Streamflow (cfs)

7Q10

slide-71
SLIDE 71

Red Clay Creek at Stanton Annual Peak Streamflow

1,850 5,330 1,370 8,260 4,200 3,140 864 17,400 10,900 3,780 5,000 3,050 2,170 800

5,000 10,000 15,000 20,000

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Streamflow (cfs)

10% 1%

slide-72
SLIDE 72

White Clay Creek near Newark Annual Low Streamflow

8.5 54 23 22 9.3 30 21 5.4 44 86 25 30 18 18 42

10 20 30 40 50 60 70 80 90 100

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Streamflow (cfs)

7Q10

slide-73
SLIDE 73

White Clay Creek near Newark Annual Peak Streamflow

9,150 5,540 2,050 7,130 4,970 1,270 13,900 5,600 4,630 4,390 5,090 1,920 2,870 3,160 19,500

5,000 10,000 15,000 20,000

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Streamflow (cfs)

1% 10%

slide-74
SLIDE 74

Christina River at Coochs Bridge Annual Low Flow

1.6 8.3 3.7 2.4 1.1 3.7 1.4 1 3.4 12 3.4 5.9 2.1 2.5 5.9

2 4 6 8 10 12 14

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Streamflow (cfs)

7Q10

slide-75
SLIDE 75

Christina River at Coochs Bridge Annual Peak Streamflow

1,790 1,910 1,840 1,500 7,050 2,130 2,350 629 2,340 5,430 1,910 1,990 1,770 1,080 1,330

1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Streamflow (cfs)

1% 10%

slide-76
SLIDE 76

Summary

  • Water quality improvements are congruent with 15-

year contributions of CBCWP.

  • Water quality has improved even with 42,000 increase

in population (2000-2010) and 9 mi2 increase in urban/suburban land (1996-2005).

  • Nitrogen levels are degrading probably due to

atmospheric deposition (not good) and/or conversion

  • f ammonia to forms of N with rising DO levels (a

good thing!).

  • No low flows since drought of 2002.