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World Water Day: Citizen scientists provide valuable information on intermittent rivers
![A citizen scientist on horseback collects data along the San Pedro River in Arizona.](/news/mmg/media/images/photo_1_f.jpg)
A citizen scientist on horseback collects data along the San Pedro River in Arizona.
Credit: Julia Fonseca
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![Citizen scientists record the end of a wet section of the San Pedro River.](/news/mmg/media/images/photoimage_2_f.jpg)
Citizen scientists record the end of a wet section of the San Pedro River.
Credit: Kelly Tighe
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![A dry stretch of the San Pedro River.](/news/mmg/media/images/photo_3_482a55f8-8995-4477-aa55-1bf6dbfcfad6_f.jpg)
A dry stretch of the San Pedro River.
Credit: Daniel Allen
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![The San Pedro River looks much different when water courses through it.](/news/mmg/media/images/photo_4_f.jpg)
The San Pedro River looks much different when water courses through it.
Credit: Daniel Allen
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![Arizona's Agua Fria River, viewed from one of its dry stretches.](/news/mmg/media/images/arizonaAgua_f.jpg)
Arizona's Agua Fria River, viewed from one of its dry stretches.
Credit: Daniel Allen
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![A wet section of the Agua Fria River.](/news/mmg/media/images/photo_6_f.jpg)
A wet section of the Agua Fria River.
Credit: Daniel Allen
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