Willow Bend Environmental Education Center. Flagstaff, Arizona. Latitude 35.2˚ N. Elevation 6,911 feet (2,107 m). Average high temperature 61.2˚ F (16.2˚ C). Record high 99˚ F (37.2˚ C). Average low temperature 31.1˚ F…


Willow Bend Environmental Education Center. Flagstaff, Arizona. Latitude 35.2˚ N. Elevation 6,911 feet (2,107 m). Average high temperature 61.2˚ F (16.2˚ C). Record high 99˚ F (37.2˚ C). Average low temperature 31.1˚ F…

Underwood Family Sonoran Landscape Laboratory. College of Architecture, Planning, and Landscape Architecture (CAPLA). University of Arizona. Tucson, Arizona, USA. Latitude 32.2˚. Elevation 2,555 feet (779 meters). Average annual precipitation 11 inches (280 mm).…

How we’re harvesting, cycling, and playing with multiple, free, on-site waters and what they grow… Before & After photos… For more…


Determine objects’ shadow lengths and direction on the day with the longest shadows of the year (the winter solstice) using the following table of shadow ratios and sun’s azimuth angles for your latitude……

Would you be interested in having access to a usable version of this Winter-Solstice Shadow Ratio calculator? Does it seem like it would be a useful design tool? Send us an email with…

The more aware we are of the seasonally changing paths of the sun across our skies, the more effectively we can design in cooperation with the sun for free passive winter heating &…

Show you: • Where in the sky the sun will be at any time of day throughout the year; • The hours of direct sunlight a building, garden, or surface will receive at…

To access the free sun-path diagrams, please enter your email address below, and you will be taken to a page from which you can download all the diagrams… We will use your email…

Publications, On-line resources, Software, Apps, Products, etc. Publications Passive Solar Architecture Pocket Reference, by Ken Haggard, David A. Bainbridge, and Rachel Aljilani. Earthscan Publications, 2009. This book provides easy-to-use information on a wide…