The San Juan River in New Mexico reached its highest crest since 1935

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The San Juan River in New Mexico reached its highest crest since 1935 as flood threats persisted across the Four Corners on Sunday, ABC News reported. Heavy rain had caused flooding in the region, and KJZZ said weather experts warned conditions could worsen despite rainfall slowing. Officials cautioned that runoff would continue draining into rivers. CBS News reported a flood watch was in effect across a large portion of the Four Corners, even as local officials expected swollen rivers to recede. The rivers had surged after rain picked up Wednesday. ABC said saturated ground left the area vulnerable to rapid flash flooding, and some parts of the Southwest could receive rain at rates of up to 2 inches per hour. The forecast also included a risk of strong storms capable of gusty winds, isolated large hail and possible tornadoes.