ASDP Press Awards
- Winner of the 2010 IPPY (Independent Publisher Book Awards) Bronze Medal for Regional Nonfiction
- Vanishing Circles: Portraits of Disappearing Wildlife of the Sonoran Desert Region
- Southwest Book of the Year (1998)
- Desert Waters: From Ancient Aquifers to Modern Demands
- Winner of the 2010 IPPY (Independent Publisher Book Awards) Silver Medal for multicultural non-fiction children's books
- Katie of the Sonoran Desert / Katie del Desierto Sonorense
- Winner of the 2010 IPPY (Independent Publisher Book Awards) Bronze Medal for multicultural non-fiction children's books
- The Little Saguaro / El sahuarito
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2007 Southwest Books of the Year Children's book award.
2008 AAAS (American Association for the Advancement of Science) Recommended Science Children's Book (Highly Recommended)
2008 Américas Award for Latin American and Caribbean Studies (Commended Title)
2009 OneBookAZ Award - Hip, Hip, Hooray, It's Monsoon Day! / ¡Ajúa, Ya Llegó el Chubasco!
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Southwest Book of the Year (2000)
2000 Western Book Design Award
Benjamin Franklin Award
BRLA Southwest Book Award - A Natural History of the Sonoran Desert
- Named as one of the "Southwest Books of the Year 2001"
- A Guide to Southern Arizona Bird Nests & Eggs
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2002 Foreword Magazine's Book of the Year Award Finalist
2011 Royal Dragon Fly Award - My Nana's Remedies / Los remedios de mi nana
- Southwest Book of the Year (2001) "Best Picks for Kids"
- Correctamundo: Prickly Pete's Guide to Desert Facts & Cactifracts
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Western Book Design & Production Award
Southwest Books of the Year (2003) - Arizona-Sonora Desert Museum: A Scrapbook
- Southwest Book of the Year 2013 - Children's Book Category
- Victor, the Reluctant Vulture
- Southwest Book of the Year 2013 - Top Pick
- A Natural History of the Santa Catalina Mountains, Arizona: with an Introduction to the Madrean Sky Islands