Transcript CE 394 K GIS in water resources GEOCHEMISTRY of AUSTIN STREAMS

CE 394 K GIS in water resources
GEOCHEMISTRY of AUSTIN STREAMS
Qianru Zeng
Fall 2002
• My objective of this project was to have
experience in applying GIS technology in
stream studies.
• This project was based on the MS
research of Lance Christian from the
department of Geological Sciences of
University of Texas at Austin.
• In order to judge the degree of urbanization
within a watershed.
• I choose The waller creek watershed in the
downtown area for geochemistry analysis.
• I will use G.I.S to analysis the geochemical
attribute by join data table of Alkalinity, major
and trace element concentrations, oxygen, and
strontium, PH, conductivity parameters.
Waller at 38th
Waller Creek @ 23rd St. (USGS)
Waller
800.00
700.00
600.00
500.00
400.00
300.00
200.00
100.00
AL
_P
P
CA B_(
N
_P
G
PM
_(
FE
UG
_P
PB
M
_(
N_
N
G
PP
B_
PB
(N
_P
G
PB
_(
ZN
NG
_P
PB
_(
K_
NG
PP
M
_(
SI
UG
_P
PM /
_(
DE
U
LT
G
A_
18
O
_
0.00
-100.00
Series1
Series2
Series3
Series4
Series5
Series6
Series7
Series8
• Nitrate concentrations
in public water supplies
have risen above acceptable
levels in many areas of the
world, largely as a result
of overuse of fertilizer and
contamination by human
and animal waste
NI_PPB
12.00
10.00
8.00
NI_PPB_(NG
6.00
4.00
2.00
0.00
1
2
3
4
5
6
7
8
PH
8.60
8.40
8.20
8.00
PH
7.80
7.60
7.40
1
2
3
4
5
downstream
6
7
8
CONDUCTIVITY
1200
1000
800
600
CONDUCTIVI
400
200
0
1
2
3
4
5
6
7
8
160.00
140.00
120.00
100.00
BA_PPB_(NG
80.00
CA_PPM_(UG
60.00
40.00
20.00
0.00
1
2
3
4
5
6
7
8
ALKALINITY
350.0
300.0
250.0
200.0
ALKALINITY
150.0
100.0
50.0
0.0
1
2
3
4
5
downstream
6
7
8
Austin street and sampling locaton
• Work in progress!
• The following work should use the
strontium-lead isotope system to create
potentiometric surface map and link the
geochemistry data with hydrological
models.