Building a GIS Dataset of the Walnut Creek Watershed Sally Holl

Outline Objectives Background: SGP Soil Moisture Experiments Why Iowa? Methods used to assemble the dataset Future work

Objectives To assemble a geospatial dataset in preparation for SGP01 To use this dataset as a base for field data collection

Background: ESE Providing a Global Perspective: NASA's Earth Science Enterprise Goal: To develop understanding of the total Earth system and the effects of natural and human-induced changes on the global environment.

Background: EOS NASA EOS – Earth Observing System Goal: To observe atmosphere, ocean, and land interactions over long periods of time to see how the Earth functions as a unified system. EOS Aqua Mission

Background: Aqua U.S.A: NASA Japan: NASDA

Background: Aqua Atmosphere Ocean Land Cryosphere

Background: Aqua Land Soil Moisture

Remote Sensing of Soil Moisture

AMSR: Advanced Microwave Scanning Radiometer

Outline Objectives Background: SGP Soil Moisture Experiments Why Iowa? Methods used to assemble the dataset Future work

Iowa: Location

Walnut Creek: Location

Iowa: Land Use Landsat TM Image of the Walnut Creek, Iowa Study Area obtained in July, 1999.

Iowa: Land Use Walnut Creek, Iowa Typical Corn Canopy on June 28, 2000.

Iowa: Land Use Walnut Creek, Iowa Typical Row Soybeans on June 28, 2000.

Outline Objectives Background: SGP Soil Moisture Experiments Why Iowa? Methods used to assemble the dataset Future work

Data Collection and Input Political boundaries Watershed boundaries River networks Flight lines Soils Precipitation DEM

Data Collection and Input Political boundaries Watershed boundaries River networks Flight lines Soils Precipitation DEM

Data Collection and Input Political boundaries Watershed boundaries River networks Flight lines Soils Precipitation DEM

Walnut Creek Walnut Creek is part of the South Skunk River Basin USGS Cataloging Unit:

Data Collection and Input Political boundaries Watershed boundaries River networks Flight lines Soils Precipitation DEM

Flight lines

Data Collection and Input Political boundaries Watershed boundaries River networks Flight lines Soils Precipitation DEM

STATSGO

Soil Data

Data Collection and Input Political boundaries Watershed boundaries River networks Flight lines Soils Precipitation DEM

Precipitation USDA Prism site: Boone County Story County June avg.July avg.

Data Collection and Input Political boundaries Watershed boundaries River networks Flight lines Soils Precipitation Road network

Road Network Iowa Department of Natural Resources Natural Resources Geographic Information System (NRGIS) Library

Results Geospatial database that can be queried for useful information about the study site, Walnut Creek.

Results: Applications

Future Work Add more useful components –Land ownership –Temperature, evapotranspiration –Sampling site points Combine tables Perform spatial analysis to choose sampling sites Record field data

Outline Objectives Background: SGP Soil Moisture Experiments Why Iowa? Methods used to assemble the dataset Future work

Fin