Alaska Statewide Digital Mapping Initiative

Goal: Map the entire State

for digital elevation

models and ortho-imagery

Make products available to

public / private interests

to support economic development

MOU Signatories

Dept. of Military & Veterans Affairs

University of Alaska - GINA

Dept. of Natural Resources

build geographic information partnerships in Alaska

leverage resources

promote the visions and goals of the NationalSpatial Data Infrastructure

serve as the technical advisory committee to theAlaska Land Managers Forum

Project Funding

• $33.3 Million Requested over 3 $33.3 Million Requested over 3 yearsyears– 25% State Funding 75% Federal Funding25% State Funding 75% Federal Funding

• $2.0 Million State GF Funded in $2.0 Million State GF Funded in FY07FY07

• Federal Funds Pending – DOD-NASA

Base Map Data FrameworkBase Map Data Framework

In progress

Complete

Elevation (inaccurate)Elevation (inaccurate)

HydrographyHydrography

Geodetic controlGeodetic control

CadastralCadastral

TransportationTransportation

Governmental UnitsGovernmental Units

LandcoverLandcover

BathymetryBathymetry

Elevation (accurate)Elevation (accurate)

Digital OrthoimageryDigital OrthoimageryDoes not exist

Alaska’s Existing High

Resolution Ortho-

Imagery

Plus 12 mountain passes From DMVA not shown ~ 4% of state

General Acquisition Priority AreasFrom Alaska Geographic Data Committee,

Ortho-Imagery Sub-Committee

Color swaths indicate the number of times the area was imaged by SRTM

0 1 2 3 4 ?

1.0 to 2.5 meter Statewide0.5 – 1 meter High Resolution

Specifications

Urbanized area, native villages, major transportation corridors and the Trans-Alaska & Gas Pipelines

~ 10% of the State for ‘Hi-Res’

USGS Quarter-quad format

Meets National Map Accuracy Standards

North American Datum 1983

Uses of digital elevation data:

aspectdrainagewatershed

slopelandform

contourssolar insolation

Geometric corrections for orthoimagery

Derive topographic information

Alaska Control Network Needs Attention for High-Resolution

Imagery

Example: One Meter IkonosSeward – Resurrection River

1. Public Domain – Open Use2. Central Core Storage –GINA3. Decentralized Storage-Users4. Live Access via OpenGIS Protocols and Internet – Multiple Sources for Mapping

Key Points

Alaska needs a new basemap. The paper based maps from USGS are

no longer meeting our needs.

Spatial data infrastructure has significant economic benefits to

the community. Benefit-Cost ratios have been as high as

9 : 1