Figure 3: Comparison of three scenarios for the 3D Hydrography Program
Detailed Description
Figure 3: Comparison of three scenarios for the 3D Hydrography Program including 1) status quo, 2) derive new data from 1-meter DEMs, and 3) derive new data from 0.5-meter DEMs. The USGS vision for 3DHP is based on Scenario 2, which has consistent nationwide coverage in 9 years with approximately 200-300 million stream features, an improved data model, meets most needs, and is estimated to bring $1.047 billion in annual benefits.
- Status Quo
Features
- Data Consistency: Data vary by steward
- Complete refresh of National Data Coverage: NO
- Number of Stream Features: ~26 million
- Improved Data Model: NO
- Major Advantage(s): Lowest cost
- Major Challenge(s): Major needs unmet; growing inconsistency
ANNUAL BENEFITS $658M
- Derive new data from 1-meter DEMs
Features
- Data Consistency: Consistent nationwide coverage
- Complete refresh of National Data Coverage: In 9 years
- Number of Stream Features: ~200 -300 million
- Improved Data Model: YES
- Major Advantage(s): Meets most needs
- Major Challenge(s): Requires significant increased investment
ANNUAL BENEFITS $1.047B
- Derive new data from 0.5-meter DEMs
Features
- Data Consistency: Consistent nationwide coverage
- Complete refresh of National Data Coverage: In 9 years following nationwide acquisition of 0.5 meter DEMs
- Number of Stream Features: ~220-330 million
- Improved Data Model: YES
- Major Advantage(s): Meets nearly all needs
- Major Challenge(s): Highest cost; source data not widely available
ANNUAL BENEFITS $1.126B
Sources/Usage
Public Domain.