Map of the growing Dunbar/Spring Neighborhood Forest’s public water harvesting
Download and/or view a high-resolution 2023 version of the map
Then zoom in to see the details.
Compare the 2023 version of the map to the originally released 2022 version (below)
to see how the map is evolving and the amount of water harvesting is growing.
Download the 2022 version of the map
View a full-size image of the 2022 version of the map
This map highlights the locations of the Dunbar/Spring neighborhood’s (in Tucson, Arizona) growing and evolving green infrastructure (water harvesting and rain-irrigated native food forestry) and other amenities within our public spaces. We borrowed graphics/symbols from the National Forest Service and National Parks in hopes that readers look at our community in a different way, focusing more on its myriad life and what enables it.
We can all help grow and steward national neighborhood parks and neighborhood forests right outside our doors where we live, work, and play; and do so in a way that once established, they are irrigated solely by free on-site waters such as rain, stormwater, greywater, etc. in a way that reduces flooding while helping recharge (or give back to) our groundwater, streams, and rivers, rather than extract from them, so that our individual, community, and planetary health all improve together. See here for a number of the ways we do so.
As of summer 2023, our neighborhood has 190 street-side street-runoff-harvesting rain gardens (ten more than in 2022). We’ve planted over 1,700 native food-bearing trees, thousands of multi-use native understory plants, and our street-side and in-street rain gardens annually harvest over one million gallons of stromwater, which previously wastefully drained away. But we can, and need to, do 30 times more of this.
The map also highlights what may need to be changed or evolved. The crazy amount of sun-baked parking lots in our neighborhood is such an example, as their exposed asphalt is contributing to the heat-island effect raising temperatures in our community, and dehydrating it. The stormwater runoff from those parking lots could be redirected from stormdrains to storm-harvesting rain gardens within and around the parking lots to freely irrigate native shade trees that would grow to shade and cool the asphalt, while controlling flooding and generating many other amenities. See here for examples.
Historical elements
Santa Cruz River
The Santa Cruz River used to run year round on the west side of Dunbar/Spring and downtown Tucson before that flow was killed from mechanical pumps extracting groundwater at a rate that exceeded natural recharge. Natural recharge of the groundwater was also dramatically reduced by the removal of the vegetative sponge (such as mesquite bosques or forests and wetlands) that used to line the Santa Cruz River, and replacing them with water-draining pavement, buildings, and compact bare earth.
Acequias or irrigation ditches
When the river flowed there were many pre-historic and historic irrigation ditches, or “acequias” that would spread the river’s flow over fields within the river’s floodplain.
Acequia de integración or Integration Ditch
Barrio Anita just west of the Dunbar/Spring neighborhood, used to be along the eastern bank of the Santa Cruz River before construction of the I-10 highway severed that connection. Through the 1940s Barrio Anita also had an irrigation ditch connected to the river. The community named the ditch “Acequia de integración”, or “Integration Ditch” because it was a place that brought everyone together, and all were welcome to swim; regardless of their ethnicity, beliefs, of the color of their skin. The acequia was a welcoming oasis when city pools, such as Oury Pool in the David G. Herrera and Ramon Quiroz Park were segregated.
Sonora sucker fish and the water-harvesting horned lizard
When the Santa Cruz River flowed you could walk less than a half mile from the Dunbar/Spring neighborhood to the river, take a swim and fish your dinner. The sculpture, in photo below, of the native Sonora sucker fish (which would grow up to 14-inches long) and Texas horned lizard symbolizes some of this past and our potential.
Blue arrow denotes stormwater flow.
The Sonora suckerfish were once abundant in the Santa Cruz River, but by 1937, were extinct from the dwindling flow caused by excessive groundwater pumping.
While the horned lizard has adapted to our dry climate by harvesting rainwater off its back and directing it to its mouth via gutter-like channels between its scales.
We too, need to harvest rainwater from our “backs”, roofs, roads, and walkways to regrow the absorbent living sponge and regeneratively give back more water to our Place and the larger watershed than we take.
Photo: Brad Lancaster, 2019, reproduced with permission from Rainwater Harvesting for Drylands and Beyond, Volume 1, 3rd Edition.
Court Street Cemetery
As many as 8,900 bodies may be buried in the Court Street Cemetery bounded by Speedway Blvd, 2nd Street, Stone Ave., and Main Ave. It was in operation from 1875 to 1909, and while the tombstones were moved to develop the neighborhood, the bodies never were. So it is not uncommon that we come upon a rotted casket and skeleton when we dig holes for water-harvesting basins and trees. When the digging is easier, you are likely close to reconnecting with the past.
References:
Un Camino al Río: Recuerdos del Río Santa Cruz y Barrio Anita
A Path to the River: Memories of the Santa Cruz River and Barrio Anita by children and neighbors from Barrio Anita, A Path to the River Press, 2000.
“The Mystery of the Wet Lizards: Why Do They Stand Like That…and in the Rain?” by Charline Profiri and Wade C. Sherbrooke
Rainwater Harvesting for Drylands and Beyond, Volume 1, 3rd Edition by Brad Lancaster. Rainsource Press, 2019.
What do you think?
This map is a second draft. Let us know what you think.
What works for you? What doesn’t? and Why?
How might we improve this map and what it strives to convey and inspire?
You can email your responses to NeighborhoodForesters@gmail.com.
For more photos, projects, history, and information on the Dunbar Spring Neighborhood Foresters
See here.
Thanks to the map’s creators
This map was created though a collaboration with Bill Mackey of Worker Inc., the Dunbar/Spring Neighborhood Foresters, and Rainwater Harvesting for Drylands and Beyond.
Help us help others
If you’d like to support the Neighborhood Foresters in the creation of such educational graphics, its on-the-ground planting and stewarding of rain and native food forests in the public rights-of-ways, and the generation of tools/events/policy to help others please consider making a donation here.
See the new, full-color, revised editions of Brad’s award-winning books
– available a deep discount, direct from Brad:
Volume 1
THE book to get you started with harvesting your site’s free on-site waters in a way that will rehydrate you, your community, and the world; while also helping mitigate flooding in wet times.
Volume 2
Check out this book’s chapter 8 for many strategies to reduce hardscape (pavement) and harvesting its runoff.
Plus many other passive water harvesting case studies and strategies with step-by-step instructions on how to implement them.