Arizona Water Science Center

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Flooding at Vekol Wash, Arizona
October 2, 2018

Flooding at Vekol Wash, Arizona

Flooding at Vekol Wash today, south of Phoenix, following remnant rains from Hurricane Rosa. 

September 27, 2018

A USGS guide for finding and interpreting high-water marks (AD)

High-water marks provide valuable data for understanding recent and historical flood events. The proper collection and recording of high-water mark data from perishable and preserved evidence informs flood assessments, research, and water resource management. This video provides guidance for skilled high-water mark identification, including marks left behind in natural and

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September 19, 2018

A USGS guide for finding and interpreting high-water marks

High-water marks provide valuable data for understanding recent and historical flood events. The proper collection and recording of high-water mark data from perishable and preserved evidence informs flood assessments, research, and water resource management. This video provides guidance for skilled high-water mark identification, including marks left behind in natural and

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June 30, 2018

Understanding Floods | Long-term Streamflow Data Collection (AD)

The USGS is developing methods to improve data collection during floods to gain new insight into the rise and fall of flood waters. In the past, the only data left behind after a flood was how high the water got, or the peak of the flood. This video presents the methodology that hydrologists are using to set up a Continuous Slope-area Reach in remote areas that are

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June 30, 2018

Understanding Floods | Long-term Streamflow Data Collection

The USGS is developing methods to improve data collection during floods to gain new insight into the rise and fall of flood waters. In the past, the only data left behind after a flood was how high the water got, or the peak of the flood. This video presents the methodology that hydrologists are using to set up a Continuous Slope-area Reach in remote areas that are

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May 8, 2018

Advances in Streamgaging | Reach-Scale Monitoring Experiment (2 of 2)

In this second installment of a two part series, The Arizona Water Science Center, in partnership with the USDA Agricultural Research Service, reviews the results of an experiment to verify remote methods that measure flood flows at the Walnut Gulch Experimental Watershed. What makes this experiment unique are the super-critical runoff flumes that precisely measure

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Unmanned Aerial System takes images in Arizona
December 31, 2017

Unmanned Aerial System in Flight

Small Unmanned Aerial System (UAS) collecting digital photos to create digital elevation models. UAS are an increasingly important tool for monitoring, assessing, and conducting targeted scientific research for the nation.

September 30, 2017

USGS Hurricane Preparedness

Before a hurricane, USGS Scientists undertake a data collection effort of a grand scale. They install a temporary mobile network of sensors along the coasts to collect additional data on the intensity of storm surge, one of the most dangerous elements of a hurricane. This effort provides critical information that allows various USGS partners and emergency responders to

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July 31, 2017

Historic Context of the Continuous Slope Area Method

The Arizona Water Science Center details the history and development of the Continuous Slope-Area Method. Learn about the people and events that began these new advances in the field of stream gaging. 

Music Artist: Glenn Jones, “Bergen County Farewell”. CC License. Music provided by www.FreeMusicArchive.com

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chart of vegetation change in the bird's foot delta
July 31, 2017

Changing vegetation in the Delta 2016-2017

Chart showing changes in vegetation density in the Mississippi River delta in Louisiana, May 2015-May 2016. From a USGS Open File Report published in July 2017 by co-authors Elijah Ramsey III and Amina Rangoonwala,

July 31, 2017

Advances in Streamgaging | Reach-Scale Monitoring Experiment (1 of 2)

In this first installment of a two part series, The Arizona Water Science Center has developed new stream gaging methods that would measure flood flows remotely. However, they have to verify the accuracy of these techniques, so they designed an experiment in partnership with the USDA Southwest Watershed Research Center at the Walnut Gulch Experimental Watershed that

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May 31, 2017

Reach-Scale Monitoring | Advances in Stream Gaging

The Arizona Water Science Center demonstrates new methods in Reach-Scale Monitoring to improve accuracy and measurability of high flow events. By installing pressure transducers and using LiDAR to measure topography data, hydrologists are able to simulate flows with two dimensional models which will help better calibrate stream gages. These advances have potential to aid

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