News by Levels · Level 2 · Student worksheet

Reservoir Rises as Storms Bring Mixed Effects

In this lesson: Connect satellite comparisons with the dated water-level record.

Name: __________________________ Date: __________________

Read the story

Landsat 9 images show Navajo Reservoir before and after autumn storms. NASA reported a rise of nearly 18 metres between September 20 and November 7.

The water increase brought short-term drought relief, but rivers also flooded nearby communities. On November 7, the reservoir reached its highest level since August 2019.

Source: NASA Earth Observatory, 2026-11-11. https://science.nasa.gov/earth/earth-observatory/water-surges-into-navajo-reservoir/

Read and practise

1. What do the images compare?

   1. The reservoir before and after autumn storms
   2. Two reservoirs on the same day
   3. The reservoir in August and September 2019

2. Which claim does the November 7 record support?

   1. The highest level ever measured
   2. The same level as every nearby reservoir
   3. The highest level since August 2019

Your turn

Explain the change and its mixed effects.

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Read online: https://newsbylevels.com/news/navajo-reservoir-satellite-water-rise-november-2026/level-2/