cooperating technical partners information exchange · 2018. 10. 3. · corridors-josh nimetz...

Cooperating Technical Partners Information Exchange

USGS 3DEP Program Supports FEMA Flood Mapping

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ASFPM Mapping and Engineering Standards Committee

Cooperating Technical Partners Sub-committee

Co-chairs:

• Thuy Patton, CFMColorado Water Conservation Board

• Carey JohnsonKentucky Department for Environmental Protection

Goals:

• Identify common concerns

• Provide opportunities for information exchange

• Identify training needs

• Promote and document the value of CTPs

Agenda

Introduction - Alan Lulloff

USGS 3DEP program overview and how it supports the FEMA flood mapping program - Vicki Lukas

State perspective & non-federal cost share -Thuy Patton

USGS 3DEP Quality Control process - Amanda Lowe

Considerations for airborne lidar mapping in riparian corridors - Josh Nimetz

Questions/Discussion

+ 8

Vicki LukasChief, Topographic Data Services

National Geospatial Progam

September 24, 2018

3D Elevation Program

(3DEP) Overview for

ASFPM

+ 99

Apply lidar technology to map bare earth and 3D data of natural and constructed features

Goal to complete acquisition of national lidar coverage with IfSAR in Alaska in 8 years

Address the mission-critical requirements of 34 Federal agencies, 50 states, and other

organizations documented in the National Enhanced Elevation Assessment

ROI 5:1, conservative benefits of $690 million/year with potential to generate $13 billion/year

Leverage the capability and capacity of private industry mapping firms

Achieve a 25% cost efficiency gain by collecting data in larger projects

Completely refresh national elevation data holdings with new products and services

3D Elevation Program (3DEP)

3DEP Status 2023

+ 10+ 10National Enhanced Elevation

Assessment (NEEA)Annual Benefits

Rank Business Use Conservative Potential

1 Flood Risk Management $295M $502M

2Infrastructure and Construction

Management$206M $942M

3 Natural Resources Conservation $159M $335M

4 Agriculture and Precision Farming $122M $2,011M

5 Water Supply and Quality $85M $156M

6Wildfire Management, Planning and

Response$76M $159M

7Geologic Resource Assessment and

Hazard Mitigation$52M $1,067M

8 Forest Resources Management $44M $62M

9River and Stream Resource

Management$38M $87M

10 Aviation Navigation and Safety $35M $56M

:

20 Land Navigation and Safety $0.2M $7,125M

Total for all Business Uses (1 – 27) $1.2B $13B

Flood Risk Management

Infrastructure

Landslides

+ 11+ 113DEP for Flood Risk Management

■ Produce higher quality flood

maps, including Flood Insurance

Rate Maps

■ Manage dam and levee safety

programs to reduce flood risks

■ Improve hydrologic modeling

and flood forecasting

■ Improve State and local flood

risk management and response

■ Improve storm water facilities

and dam design

■ Extract building footprints and

identify the finished floor

elevation to quantify potential

damages based on flooding

depths

Conservative annual benefits estimated at $502M

Lidar aids hydraulic modeling to determine flood-inundation on

the Saluda River, near Greenville, SC

+ 12+ 123DEP for

Flood Risk

Management

3DEP website –

see publications:

https://www.usgs.gov/core-

science-systems/ngp/3dep

Direct link:

https://pubs.er.usgs.gov/pu

blication/fs20173081

+ 13+ 133DEP Status

■ 3DEP is managed by USGS on behalf of a broad

partner community that includes state, Federal, and

local agencies, as well as the private sector and

non-profit groups

■ Since the beginning of FY15

■ Over 200 partners – including 16 Federal

agencies and state and local governments from

44 states and territories – have contributed

funding for 3DEP data acquisition across the

Nation

3DEP is built on partnerships

3DEP Status

2023

Goal to provide ROI 5:1 with

potential to generate $13 B/year

■ USGS and partner investments totaling $299.6M supported acquisition of

1.5 million square miles of data

■ Demands for higher quality, repeat coverage, new products and services

continue to grow

+ 14+ 143D Elevation Program (3DEP)

Data acquisition investments by all

partners, by fiscal year - FY18 in progress

Data are available or in progress for 48% of the Nation *includes lidar and AK IfSAR

+ 15+ 15Supplemental Funding

California Wildfires

Hurricane Harvey

Hurricanes Irma and Maria

3DEP Acquisition

■ $20.3M supplemental funding to for lidar acquisition

following last year’s hurricanes and wildfires

■ Supplemental was augmented by a total of $28.8M in

partnerships and $3.4M 3DEP base funding to complete

coverage of the impact and adjacent areas

+ 16+ 163DEP-Quality Coverage by State

+ 17+ 17

■ USGS and NOAA co-lead the OMB A-16

Elevation Theme

■ 3DEP Executive Forum

■ Facilitates executive collaboration on

strategies to fund and implement 3DEP for

the benefit of all its stakeholders

■ Executive Outreach to Industry Partners

and Stakeholder Groups

■ Provides direction to 3DEP Working Group

■ 3DEP Working Group

■ Coordinates implementation of 3DEP

Member Agencies

Bureau of Land Management

Department of Homeland Security

Department of Transportation

Environmental Protection Agency

Federal Aviation Administration

Federal Communications Commission

Federal Emergency Management Agency

US Forest Service

US Fish and Wildlife Service

National Oceanic and Atmospheric Administration

National Park Service

Natural Resources Conservation Service

Office of Surface Mining Reclamation and Enforcement

US Department of Agriculture

US Army Corps of Engineers

US Geological Survey

American Association of State Geologists

National States Geographic Information Council

3D Elevation Program (3DEP)Governance

+ 18+ 183DEP FEMA Partnership

■ Investments driven

by flood mapping

requirements

■ Flood mapping

requirements are

coordinated with

state floodplain

management

officials

Projects with FEMA funding

+ 19+ 193DEP Data Acquisition Partnerships

Together determine the

annual acquisition plan

Non-Federal

Broad Agency

Announcement (BAA)

Fair and equitable process

for non-Feds to partner with

Federal Agencies

Announced on

FedBizOpps.gov and

grants.gov

Competitive, selection based

on documented criteria

Can include Federal

Agencies

Partners can propose to use

USGS contract (GPSC) or

their own contract

Federal

Partners =

3DEP Working

Group

Federal Interagency

Agreements (IA)

FY19 BAA released September 17

FY19 BAA Webinar August 22 -

presentation with notes available

FY19 BAA Proposals due Nov. 9,

2018

Awards issued Nov. 2018 – March

2019 based on the availability of

funding

BAA stays open all Fiscal Year

+ 20+ 20

Goal to develop a comprehensive multi-year plan

3DEP Data Acquisition Partnerships

Purpose – move beyond

opportunistic annual process

to a national, systematic

plan

Facilitate greater

investments and

leveraging through longer

planning lead times

Allows for improved

reporting and justification

of investments

Presents a plan for

nationwide coverage

Inputs

Federal

State, local, tribal and

other partners

3DEP Multi-Year State PlansFederal Multi-Year Plan

Comprehensive plan for

nationwide coverage

+ 21+ 21Federal Input to the Multi-year PlanFY19 3DEP Broad Agency Announcement

+ 22+ 22Federal Input to the Multi-year PlanFY19 3DEP Broad Agency Announcement

+ 23+ 23State Input to the Multi-year PlanNational States Geographic Information Council Project

NSGIC project will develop

Guide to the development of a 3DEP

Data Acquisition Plan

State plan template

Best practices

Pilots to test and refine materials

3DEP Workshop at the October 2018

NSGIC Annual Conference

Pilot Participants will share experiences

and insights, participate in acquisition

plan development activities, and

coordinate with federal agencies

USGS, NRCS, FEMA to participate in

workshop

Pilot State Participants

+ 24+ 24

3D Nation Elevation Requirements and Benefits Study

Understand inland, nearshore and offshore bathymetric data requirements and benefits

Understand how requirements and benefits dovetail in the nearshore coastal zone

Plan for the next round of 3DEP after completion of nationwide coverage

Gather technology-agnostic user information to be able to assess new technologies

against requirements and identify the tradeoffs between different approaches

3DEP Future Acquisition Partnerships

Improve our understanding

of needs to guide

development of the next

generation of 3DEP

products and services

+ 25+ 253D Elevation Program (3DEP)Endorsements

National lidar program is a priority of the National Science and

Technology Council’s National Plan for Civil Earth Observations

National Academy of Public Administration report on FEMA

Flood Mapping recommended that OMB implement the 3DEP

plan for national lidar

Endorsed by 30 groups including ASFPM – Thank you!

+ 26+ 26Get Involved in 3DEP AcquisitionResources

■ Learn more about 3DEP

https://www.usgs.gov/core-science-

systems/ngp/3dep

■ Direct link to collaboration and

partnerships

https://on.doi.gov/2QogPE2

+ 27

3D Elevation Program (3DEP)

THANK YOU!

Poll Question

Nationwide coverage of 3DEP data available or in progress is:

State Perspective 3DEPSeptember 24, 2018

Thuy Patton

Colorado Water Conservation Board

Watershed and Flood Protection Section

LiDAR Acquisition by Year

Poll Question

The non federal match requirement for 3DEP is 25% of:

Quality Control for

the 3D Elevation

Program

Amanda Lowe, Supervisory Geographer, USGS

National Geospatial Technical Operations Center

+ 34+ 34High Level Systems Overview

Delivery

Elevation Systems

Data

Contribution

Product

Tracking

System (PTS)

GPSC

Acquisition

Partner

Acquisition

Financial

TOMIS

Quality

Control

(WMX)

Product

Generation

(WMX)

Geospatial

Data

Architecture

USGS

ScienceBase

TNM Viewer

Data.gov

minor in-house edits

+ 35

Provide an independent validation of lidar/ifsar data sent to the NGTOC for

suitability for the 3DEP

Provide feedback/recommendations regarding lidar/ifsar and derived

products based on project requirements and USGS base specifications

Create Standard 3DEP Products for dissemination through The National Map

Where possible and appropriate, edit existing lidar projects to bring the data

up to minimum acceptable quality for 3DEP and inclusion in The National

Map

Role of NGTOC Elevation

Operations in the 3DEP

+ 36Base 3DEP Specifications

USGS Lidar Base Specification Version 1.3: Identifies and defines minimum requirements for acquisition, processing, and data deliverables as required by the United States Geological Survey for inclusion in the 3DEP. References several industry standards and specifications.

American Society for Photogrammetry and Remote Sensing (ASPRS) LAS 1.4 Specification: file format specification for .las (point cloud) format. Referenced by the USGS LBS 1.2 as the required file format for lidar point cloud. Industry standard.

ASPRS Positional Accuracy Standards for Digital Geospatial Data: identifies methods for positional accuracy testing for high resolution elevation data. Referenced by the USGS LBS 1.2 as the required method for accuracy assessment

OGC Well Known Text Version 2001: format specification for Well Known Text used to identify spatial referencing information in a las file. Required by ASPRS LAS 1.4

Content Standard for Digital Geospatial Metadata (CSDGM): Maintained by the FGDC, current standard for XML metadata. Referenced by the USGS LBS 1.2 as the required XML metadata format

https://pubs.usgs.gov/tm/11b4/pdf/tm11-B4.pdfhttp://www.asprs.org/wp-content/uploads/2010/12/LAS_1_4_r13.pdfhttps://www.asprs.org/pad-division/asprs-positional-accuracy-standards-for-digital-geospatial-data.htmlhttp://www.opengeospatial.org/standards/cthttps://www.fgdc.gov/metadata/csdgm/

+ 37+ 37Quality Control Tools

Programs

ArcMap

Global Mapper

LP360

Custom Tools in Production

Vertical Accuracy Tool

P2 - Parallel LAS Pyramiding

LASQC

RASQC

LAS WKT Writer

QC Database and Report Generator

+ 38Quality Control:

Deliverables Check

Metadata

Control and Data Validation Check Points

Raw Point Cloud

Classified Point Cloud

Bare-earth DEM

Hydrological Breaklines

Other required by Task Order (Intensity Rasters, etc.)


Metadata

Read all reports delivered by Contractor

Run XML metadata through USGS Metadata Parser

Check content of all metadata deliverables

+ 40Quality Control:Accuracy

Absolute Vertical Accuracy

Non-vegetated Vertical

Accuracy (NVA) of the

Unclassified Point Cloud

NVA and Vegetated Vertical

Accuracy (VVA) of the DEM

Relative Vertical Accuracy

Inter-swath Accuracy

+ 41Quality Control:Absolute Accuracy

+ 42Quality Control:Relative Accuracy – Interswath – Visual Cues

+ 43Quality Control:Relative Accuracy – Interswath – Visual Cues

+ 44Quality Control:Relative Accuracy – Interswath (Dz)

+ 45Quality Control:Relative Accuracy – Interswath (DQM)


Point Cloud Statistics and Validation

LAS file formatting and header population

LAS Version

Spatial Reference – Well Known Text

Bounding Extents – header vs. points

Point Count – header vs. points

Classification

Returns

Intensity Values

Overlap

Edge of Flightline

GPS Time Range


Point Cloud Statistics and Validation

LASQC Output:


DEM Visual Review

Checking for any above-ground

features that should not be present

in the Bare Earth DEM

Verifying the ground was

classified correctly in the point

cloud

DEM with Vegetation Classified as Ground

Profile of DEM with

Vegetation classified as Ground


DEM Visual Review


DEM Visual Review

Gaps


DEM Visual Review

Data Voids



Hydro-flattened

mapped waterbodies, streams,

rivers, reservoirs, and other

cartographically polygonal water

surfaces are flat and, where

appropriate, level from bank to

bank

surfaces of streams, rivers, and long

reservoirs demonstrate a gradient

change in elevation along their

length, which is consistent with

their natural behavior and the

surrounding topography

Hydro-enforced

elevations removed from the tops of

selected drainage structures

(bridges and culverts) so as to

depict the terrain under those

structures

enables hydrologic and hydraulic

models to depict water flowing

under these structures, rather than

appearing in the computer model to

be dammed by them because of

road deck elevations higher than the

water levels


Reporting

59595959Amanda Lowe

Supervisory Geographer

[email protected]

Image of Zion National Park, Utah

+

September 24, 2018

Joshua D. Nimetz

U.S. Geological Survey

National Geospatial Program - National Geospatial Technical Operations Center

[email protected]

Considerations for

airborne lidar mapping

in riparian corridors

61616161

Overview of concepts

Collection characteristics of the airborne lidar

point cloud data

Defining low-

confidence areas

Ground-truthing

surveys

62626262Collection characteristics of the airborne lidar

point cloud data

Several factors determine ability of sensor to detect ground surface in dense vegetation including:

Spatial resolution – typically referred to as nominal pulse density or nominal pulse

spacing. QL1 is better than QL2

Look angle a wider angle of incidence means pulsed laser energy travels through

more of vegetation structure to reach ground

Pulse discrimination and laser power are key factors in capturing vertical structure of

vegetation – not directly related to ground surface, but still important

Vegetation growth cycle: barren or fully emergent?

63636363Low confidence areas – ASPRS definitionDefined by low ground point density; indicates poor vegetated vertical accuracy

Vegetation obscures detection

of ground surface

ASPRS suggests one

approach for delineating areas

of low confidence

However, not currently a

requirement of the 3DEP lidar

base specification

http://www.asprs.org/a/society/committees/standards/

Positional_Accuracy_Standards.pdf

http://www.asprs.org/a/society/committees/standards/Positional_Accuracy_Standards.pdf

64646464



Defined by low ground point density; indicates poor vegetated vertical accuracy

Low confidence areas – ASPRS definition


65656565



Defined by low ground point density; indicates poor vegetated vertical accuracy

Low confidence areas – ASPRS definition


66666666

GPS/GNSS where possible; conventional land surveying where not

Ground-truthing survey

Point cloud vertically aligned

with non-vegetated control

points

Vertical accuracy assessed with

check points

GNSS surveying in signal-

deprived areas leads to

inferior results

Image courtesy of Dewberry

Image courtesy of Merrick

Image courtesy of Woolpert

67676767Take-aways

Work with airborne lidar contractor to determine best

collection strategy for heavily vegetated areas

sensor characteristics good for foliage penetration; max

field of view; multiple looks may be advantageous

Consider requiring a low confidence raster or

polygon feature class as an ancillary deliverable

Require that vegetated vertical accuracy check point

survey is done within close timeframe to airborne

lidar flights - growth conditions should be modeled

Require ground photos of all check points for

interpretation of accuracy assessment results

NPS of 1st returns ≈1.2 ft

NPS of ground points ≈ 5.7 ft

Coniferous riparian zone

68686868

Thank you…

Points of contact:

Josh Nimetz – elevation program area lead; NGP-NGTOC [email protected]

Jason Stoker – chief elevation scientist; NGP [email protected]

Amanda Lowe – elevation unit supervisor; NGP-NGTOC [email protected]

mailto:[email protected]:[email protected]:[email protected]

Questions&

Discussion

Alan Lulloff

[email protected]

Vicki Lukas

[email protected]

Thuy Patton [email protected]

Joshua Nimetz

[email protected]

Amanda Lowe

[email protected]

Cooperating Technical Partners

Information Exchange

mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]

Poll Question

Please rate this webinar.

• Certified Floodplain Managers are eligible for 1 Continuing Education Credit for participating in this webinar.

• You must have registered individually and indicated you are a CFM at time of registration.

• Eligibility for CEC is dependent on your participation in poll questions and time spent viewing the webinar, as determined by the webinar software.

• Attending this webinar in a group setting or only viewing the recording is NOT eligible for CEC.

Continuing Education Credits

• To suggest future CTP webinar topics, please contact Alan Lulloff at [email protected] or type a suggested topic into the Questions panel today

• ASFPM CFM CECs will be automatically applied

• Certificates of Attendance will be emailed, please contact [email protected] with any certificate issues

• Follow-up email with link to slides and recording will be sent next week

Thank You for Joining Us!

Closing Comments
mailto:[email protected]:[email protected]

cooperating technical partners information exchange · 2018. 10. 3. · corridors-josh nimetz...

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