GIS in Water Resources Review
for Midterm Exam Fall 2009
The material is classified according to Bloom’s Taxonomy of
Educational Objectives:
Level Title Meaning
1 Knowledge Definitions,
facts, formulas
2 Comprehension Explanation
of definitions, formulas, problem solving procedures
3 Application Know
how to use a formula or procedure to solve simple problems
4 Analysis Break
down a complex problem and solve by steps
5 Synthesis Derivation
of basic formulas, design of new systems
6 Evaluation Advantages
and limitations of alternative approaches
Session Topic Level
1 Introduction to GIS in Water Resources 2
2 Introduction to ArcGIS 2
3 Exercise 1: Introduction to ArcGIS and
HydroExcel 4
4 Data sources for GIS in water resources 2
5 Geodesy, Map Projections and Coordinate Systems 4
6 Exercise 2: Building a Base Map for the San
Marcos Basin 4
7 Spatial analysis using grids 4
8 Exercise 3:
Spatial analysis 5
9 DEM’s and watershed delineation 4
10 Exercise 4: Watershed and stream network
delineation 5
11 Network analysis, Arc Hydro, and NHDPlus 3
12 Space and time in ArcGIS 2
13 Exercise 5: Flow networks and basin precipitation 5
Expected Skills
·
Convert degree, minute,
second coordinates to decimal degrees, and vice versa
 Determine
the length of a line along a meridian, parallel or great circle on a
spherical earth.
 Determine
the length of a line when using projected coordinates.
 Sketch
on a map the standard parallels, central meridian, and latitude of origin
for a given projection (the coordinates of origin, what earth datum, what
projection)
 Determine
the map extent of a set of geographic data
 Determine
the statistics (e.g. average value or sum) of an attribute of a selected
set of features satisfying a logical query
 Be
able to take the parameters of a map projection and interpret what they
mean (focus on geographic, UTM, Albers and State Plane projections)
 Know
the common national data sources for GIS in Water Resources and their GIS
data formats (vector, raster, point, line, polygon etc.)
 Be
able to perform raster calculations for spatial analysis and understand
the concepts involved with raster calculation
 Be
able to calculate slope on a DEM
 Take a
small grid of elevation cells and calculate the flow direction and flow
accumulation grids
 Define
the watershed of a cell in a DEM grid
 Derive
Geomorphologic and Watershed attributes from a DEM derived drainage
network. These include, channel
length, drainage area, and drainage density.
 Be
able to use interpolation tools to obtain spatial fields from point data
and explain the function and interpret the output of these tools.
 Be
able to use zonal statistics tools to obtain averages of spatial fields
such as precipitation and slope over watersheds and catchments. Explain the function and interpret the
output from these tools.
 Be
able to analyze spatial aspects of the water balance (precipitation,
streamflow, and runoff ratios) to develop a spatial understanding of the
hydrologic flows in a river basin
 Understand
how geometric networks are created and how catchments and attributes are
connected to flowlines in the NHDPlus.
 Understand
how geoprocessing operations can be sequenced through time to create time
series of watershed attributes.
Readings from Arc Hydro: GIS in Water Resources
Concept

Reference in “Arc
Hydro”

1. Building
hydronetworks and connecting features to them

Chapter 3, pp. 3447

2. DEM’s and
delineation of watersheds and stream networks

Chapter 4, pp. 5586

3. Time series and
connecting spatial and temporal data

Chapter 7, pp. 146161
