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Dry Horizons: October 2024
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News and research to help you plan for drought
Water spills over the top of Englebright Dam on the Yuba River in California. Adobe Stock/Gary Saxe, Licensed image.

Study uses GPS to measure water deficits in California

A new drought index could bring more in-depth information on groundwater levels to the drought monitoring toolkit.  

Researchers from the University of Montana used hydrologic load estimates to develop a GPS-based drought index as part of a study published in Water Resources Research. The study focuses on California, which has a robust GPS network and hydrologic observations from various sources.  

In addition to capturing long-term hydrologic drought trends, the study reveals recharge associated with clusters of atmospheric river events observed throughout the study period.  

The index could improve water storage management, particularly in regions that rely heavily on groundwater for irrigation and drinking water supplies.
Read the study
The Drought Finance Tracker includes statistics, analysis and more for national drought management projects.

Interactive tool provides financial data on drought management

A recently updated tool aims to help decision-makers better understand the finances of drought management. 

The Drought Finance Tracker, developed by the United Nations Food and Agricultural Organization - Land and Water Division, is a database showing drought-related projects by country, 2000-2021. 

The resource draws on 2023 data published by the Organisation for Economic Co-operation and Development. It contains resources including downloadable statistics and data visualizations to further analyze drought finance. 

The portal builds on the Integrated Drought Management approach, supporting a shift from reactive responses to proactive measures.
Learn more
Simien Mountains National Park in northern Ethiopia. Adobe Stock/Radek, Licensed image

New models estimate drought and flood displacement risk in Horn of Africa

Drought has caused nearly 5 million global internal displacements since 2017, according to a report published by the Internal Displacement Monitoring Centre. In particular, the countries of Ethiopia, Somalia and Sudan have been strongly affected.  

By analyzing flood impact and drought-induced displacement in these Horn of Africa countries, the report provides models for estimating displacement risk related to drought as well as flooding. 

The flood model’s vulnerability assessment incorporates often-excluded factors such as direct impacts on livelihoods and indirect impacts on facilities and services. The drought section projects changes under climate-induced variations. The model for drought-driven displacement employs an impact-based approach with machine learning models.
Read the report

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