Water Resources - IMPACT - January 2018 - 6

F E AT U R E

The National Water Model Vision
David R. Maidment

Beaumont

Houston

T

he National Water Model enables
forecasting of water like weather-
everywhere, at local scale, all
the time. This is a remarkable
achievement, tracing the movement of water
from the atmosphere to the oceans and from
coast to coast through the national network
of streams, rivers and water bodies. National
Water Model forecast information is publicly
and freely available, and is updated hourly-a
kind of "federal brain in the sky" that is
continuously accessible no matter what time
of the day or night information about water
conditions and forecasts is needed in a
particular location or region.
6 * Water Resources IMPACT

January 2018

The National Water Model uses as input precipitation and
weather information from the nation's weather forecasting system
to compute a soil water balance across the continental United States,
yielding surface runoff and subsurface drainage throughout the
landscape. Land and water systems are connected by dividing the
continental stream network into 2.7 million discrete stream reaches,
each of which has a local drainage area that contributes its flow to
the associated stream reach. The NOAA National Weather Service
operates the National Water Model and is tightly integrated with the
U.S. Geological Survey, which provides the streamflow observations
used to update the model hourly.
A key goal of the development of the National Water Model is
to have a single, continental-scale flood forecasting system for the
United States. A new National Water Center has been established
on the Tuscaloosa campus of the University of Alabama to support
interpretation of the output of National Water Model, and to be a point
of synthesis of federal water information, such as flood inundation
mapping from the U.S. Army Corps of Engineers and flood impact
assessment from FEMA. This Center is not yet operational (as of
January 2018), but once it becomes so, it will be a valuable support for
flood emergency response at the state and local level, in cohesion with
the guidance presently provided by the National Weather Service River
Forecast Centers and Weather Forecast Offices.
This issue of Water Resources IMPACT surveys the development
of the National Water Model. Thomas Graziano, director of the
Office of Water Prediction, National Weather Service, describes
the interagency effort lead by NOAA (page 8). Steve Kopp (Esri)
has compiled a roundtable "discussion" from a variety of potential
NWM users and contributors (page 10). Dewberry's FloodCast
project is discussed, which focuses on the impact of flooding on
the transportation network (Mampara, page 12). Maidment (page
14) discusses how Hurricane Harvey demonstrates the urgency
of understanding the overall pattern of water inundation in the
landscape. The role of the academic community is described through
Summer Institutes held at the National Water Center (Bales, pages
17). And last, how users can get output from the NWM is described
by Fernando Salas, NOAA (page 19).
The advent of the National Water Model opens a new era in
hydrology for the United States. When fully developed, it will enable
an integrated view of hydrology for the nation to underpin water
forecasting, management and design. ■
David R. Maidment is the Hussein M. Alharthy Centennial Chair of Civil
Engineering at the University of Texas at Austin. In 2016, he was elected
to the National Academy of Engineering for development of geographic
information systems applied to hydrologic processes. AWRA annually
bestows the David R. Maidment Award for Water Resources Data and
Information Systems for outstanding accomplishments in that field.
Contact: maidment@mail.utexas.edu.



Table of Contents for the Digital Edition of Water Resources - IMPACT - January 2018

President’s Message
The National Water Model Vision
Transforming NOAA Water Prediction: The New National Water Model
Perspectives on the National Water Model
FloodCast: A Framework for Enhanced Flood Event Decision Making for Transportation Resilience
Hurricane Harvey and the National Water Model
Contributions of the Academic Community in Advancing the National Water Model
Turning on the Faucet: Making National Water Model Data Flow
The New Economics of Water: Balancing Urban and Agricultural Water Needs on Colorado’s Front Range
What’s Up with Water: United We Stand, Divided We Fall: States Rights and WOTUS Rule
International Conference Recap
AWRA State Section and Student Chapter News
December JAWRA Highlights
In Memoriam: Ari Michelsen
2018-2019 Richard A. Herbert Memorial Scholarship Opportunities
AWRA Board of Directors 2018 Call for Nominations
Water Resources - IMPACT - January 2018 - Intro
Water Resources - IMPACT - January 2018 - cover1
Water Resources - IMPACT - January 2018 - cover2
Water Resources - IMPACT - January 2018 - 3
Water Resources - IMPACT - January 2018 - 4
Water Resources - IMPACT - January 2018 - President’s Message
Water Resources - IMPACT - January 2018 - The National Water Model Vision
Water Resources - IMPACT - January 2018 - 7
Water Resources - IMPACT - January 2018 - Transforming NOAA Water Prediction: The New National Water Model
Water Resources - IMPACT - January 2018 - 9
Water Resources - IMPACT - January 2018 - Perspectives on the National Water Model
Water Resources - IMPACT - January 2018 - 11
Water Resources - IMPACT - January 2018 - FloodCast: A Framework for Enhanced Flood Event Decision Making for Transportation Resilience
Water Resources - IMPACT - January 2018 - 13
Water Resources - IMPACT - January 2018 - Hurricane Harvey and the National Water Model
Water Resources - IMPACT - January 2018 - 15
Water Resources - IMPACT - January 2018 - 16
Water Resources - IMPACT - January 2018 - Contributions of the Academic Community in Advancing the National Water Model
Water Resources - IMPACT - January 2018 - 18
Water Resources - IMPACT - January 2018 - Turning on the Faucet: Making National Water Model Data Flow
Water Resources - IMPACT - January 2018 - 20
Water Resources - IMPACT - January 2018 - The New Economics of Water: Balancing Urban and Agricultural Water Needs on Colorado’s Front Range
Water Resources - IMPACT - January 2018 - What’s Up with Water: United We Stand, Divided We Fall: States Rights and WOTUS Rule
Water Resources - IMPACT - January 2018 - 23
Water Resources - IMPACT - January 2018 - 24
Water Resources - IMPACT - January 2018 - International Conference Recap
Water Resources - IMPACT - January 2018 - AWRA State Section and Student Chapter News
Water Resources - IMPACT - January 2018 - December JAWRA Highlights
Water Resources - IMPACT - January 2018 - In Memoriam: Ari Michelsen
Water Resources - IMPACT - January 2018 - 2018-2019 Richard A. Herbert Memorial Scholarship Opportunities
Water Resources - IMPACT - January 2018 - AWRA Board of Directors 2018 Call for Nominations
Water Resources - IMPACT - January 2018 - cover3
Water Resources - IMPACT - January 2018 - cover4
https://www.nxtbook.com/naylor/AWRAS/AWRAS0319
https://www.nxtbook.com/naylor/AWRAS/AWRAS0219
https://www.nxtbook.com/naylor/AWRAS/AWRAS0119
https://www.nxtbook.com/naylor/AWRAS/AWRAS0618
https://www.nxtbook.com/naylor/AWRAS/AWRAS0518
https://www.nxtbook.com/naylor/AWRAS/AWRAS0418
https://www.nxtbook.com/naylor/AWRAS/AWRAS0318
https://www.nxtbook.com/naylor/AWRAS/AWRAS0218
https://www.nxtbook.com/naylor/AWRAS/AWRAS0118
https://www.nxtbook.com/naylor/AWRAS/AWRAS0617
https://www.nxtbook.com/naylor/AWRAS/AWRAS0517
https://www.nxtbook.com/naylor/AWRAS/AWRAS0417
https://www.nxtbook.com/naylor/AWRAS/AWRAS0317
https://www.nxtbook.com/naylor/AWRAS/AWRAS0217
https://www.nxtbook.com/naylor/AWRAS/AWRAS0117
https://www.nxtbook.com/naylor/AWRAS/AWRAS0616
https://www.nxtbook.com/naylor/AWRAS/AWRAS0516
https://www.nxtbook.com/naylor/AWRAS/AWARS0416
https://www.nxtbook.com/naylor/AWRAS/AWRAS0316
https://www.nxtbook.com/naylor/AWRAS/AWRAS0216
https://www.nxtbook.com/naylor/AWRAS/AWRAS0116
https://www.nxtbookmedia.com