logo
Study Shows Changes in Great Plains’ Ogallala Aquifer
news image
Special Stories
21 Feb 2019 8:19 AM
[Dust storm approaching Stratford, Texas during the Dust Bowl of the 1930s. Photo credit: NOAA George E. Marsh Album] [NOAA by Michon Scott] The Ogallala Aquifer underlies parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. From wheat and cows to corn and cotton, the regional economy depends almost exclusively on agriculture irrigated by Ogallala groundwater. But according to the Fourth National Climate Assessment (NCA4), producers are extracting water faster than it is being replenished, which means that parts of the Ogallala Aquifer should be considered a nonrenewable resource. The map below shows changes in Ogallala water levels from the period before the aquifer was tapped to 2015. Declining levels appear in red and orange, and rising levels appear in shades of blue. The darker the color, the greater the change. Gray indicates no significant change. Although water levels have actually risen in some areas, especially Nebraska, water levels are mostly in decline, namely from Kansas southward. In the early twentieth century, farmers converted large stretches of the Great Plains from grassland to cropland. Drought and stress on the soils led to the 1930s Dust Bowl. Better soil conservation and irrigation techniques tamed the dust and boosted the regional economy. In 2007, the market value from the Ogallala region's agricultural products totaled roughly $35 billion. However, well outputs in the central and southern parts of the aquifer are declining due to excessive pumping, and prolonged droughts have parched the area, bringing back Dust Bowl-style storms, according to the NCA4. The Agriculture chapter of NCA4 describes the risks and opportunities for resilience across the Ogallala region:  "Recent advances in precision irrigation technologies, improved understanding of the impacts of different dryland and irrigation management strategies on crop productivity, and the adoption of weather-based irrigation scheduling tools as well as drought-tolerant crop varieties have increased the ability to cope with projected heat stress and drought conditions under climate change. However, current extraction for irrigation far exceeds recharge in this aquifer, and climate change places additional pressure on this critical water resource." Edited for WeatherNation by Meteorologist Mace Michaels
All Weather News
Tracking the Next Winter Storm for the High Plains
Tracking the Next Winter Storm for the High Plains
The last few days of March are featuring an a
30 Mar 2023 7:50 PM
Multi-Day Severe Threat From the Plains to the Midwest
Multi-Day Severe Threat From the Plains to the Midwest
A multi-day severe weather threat will strike
30 Mar 2023 7:30 PM
Severe Weather Threat for the Hard Hit Deep South Once Again Today & Friday
Severe Weather Threat for the Hard Hit Deep South Once Again Today & Friday
Confidence is increasing in the threat of str
30 Mar 2023 7:15 PM
Latest Storm Continues to Slam California With Rain and Snow
Latest Storm Continues to Slam California With Rain and Snow
Another area of low pressure is pushing onto
30 Mar 2023 12:35 PM
Avalanche Risk Remains Considerable Through the Rockies With More Snow This Week
Avalanche Risk Remains Considerable Through the Rockies With More Snow This Week
Are you headed into the High Country over the
30 Mar 2023 11:40 AM
Winter Continues in the Western U.S. With Snow in the Rockies & Cascades
Winter Continues in the Western U.S. With Snow in the Rockies & Cascades
The same storm system that is impacting Calif
30 Mar 2023 10:10 AM
Increased Fire Danger Threat in the Southern Plains
Increased Fire Danger Threat in the Southern Plains
There is a high fire danger threat through th
30 Mar 2023 10:00 AM