Land Use and Land Cover Change in the San Antonio and Guadalupe River Basins
Rachel MillsDepartment of Marine Science
November 20, 2008
Objectives
• Identify San Antonio and Guadalupe River Basins
• Analyze Discharge and Stream Flow Data
• Analyze Land Use/Land Cover Data
• Analyze Observations vs. Discharge
San Antonio and Guadalupe River Basin
Length =230 miAvg Disch = 1200 cfsBasin Area = 2023 mi^2
Length = 240 miAvg Disch = 400 cfsBasin Area = 934 mi^2
Annual Discharge
19361938
19401942
19441946
19481950
19521954
19561958
19601962
19641966
19681970
19721974
19761978
19801982
19841986
19881990
19921994
19961998
20002002
20042006
0
1000
2000
3000
4000
5000
6000
7000
Guadalupe Annual Dishcharge
Year
Disc
harg
e (c
fs)
Annual Discharge
19251927
19401942
19441946
19481950
19521954
19561958
19601962
19641966
19681970
19721974
19761978
19801982
19841986
19881990
19921994
19961998
20002002
20042006
0
500
1000
1500
2000
2500
3000
3500
San Antonio Annual Discharge
Year
Disc
harg
e (c
fs)
Land Cover ChangeCategory 1992 2001Open water 183865 204403Urban 2322486 2568680Barren 37931 52851Forest 7819649 6933025Grassland/Shrub 10828073 11292678Agriculture 7296467 7300536Wetlands 826000 962298
% Land Cover Change = 6.445
Still to come…
• Storm events and Land Use Land Cover Change*To be finished
• Calculate number of Observations for levels of Discharge (High and low flow events)*To be finished