Gis in water resources concepts from midterm 2012
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GIS in Water Resources Concepts from Midterm 2012 PowerPoint PPT Presentation


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GIS in Water Resources Concepts from Midterm 2012. David Maidment. Definition of Latitude, f. m. p. S. n. O. f. q. r. (1) Take a point S on the surface of the ellipsoid and define there the tangent plane , mn (2) Define the line pq through S and normal to the tangent plane

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GIS in Water Resources Concepts from Midterm 2012

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Gis in water resources concepts from midterm 2012

GIS in Water ResourcesConcepts from Midterm 2012

David Maidment


Definition of latitude f

Definition of Latitude, f

m

p

S

n

O

f

q

r

(1) Take a point S on the surface of the ellipsoid and define there the tangent plane, mn

(2) Define the line pq through S and normal to the

tangent plane

(3) Angle pqr which this line makes with the equatorial

plane is the latitude f, of point S


Geodatabase a store for all types of geospatial information

Geodatabase – a store for all types of geospatial information


Arcgis geodatabase

Workspace

Geodatabase

Feature Dataset

Feature Class

Geometric

Network

Relationship

Object Class

ArcGIS Geodatabase


Subwatershed precipitation by thiessen polygons

Subwatershed Precipitation by Thiessen Polygons

  • Thiessen Polygons

  • Intersect with Subwatersheds

  • Evaluate A*P Product

  • Summarize by subwatershed


Arcgis slope tool

a

b

c

d

e

f

g

h

i

ArcGIS “Slope” tool


Arcgis aspect the steepest downslope direction

ArcGIS Aspect – the steepest downslope direction


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