Treated groundwater now flows in stretch of Tucson river, could spur lush vegetation | Subscriber

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“My guess is that it will be a few weeks before things really start,” he said.

The water had already flowed further downstream than he thought, Bogan said, adding that he had heard second-hand reports that it was as far as Julian Wash, south of Jan.

“What we don’t know is how the infiltration dynamics will change over time,” he said. When water first flows over the soil, the soil tends to be a little hydrophobic, a little water repellent, because it has run out of water for a long time. This allows the water to migrate further at first.

“But at some point all of the sand and gravel you see here will become saturated so the rate of infiltration might increase so the water doesn’t get that far,” he said.

“Maybe the water could get to the other one here,” he said, referring to the original Heritage Project that dumped water into the river at around 25th Street.

He believes that due to the relatively pristine nature of the Irvington Canal, the Irvington area has the potential to rival 25th in wildlife and habitat wealth, he said. Its west bank is full of desert shrubs and the sediment stays in place, he said.

“Ecology is always strange. You never know what something is going to do, ”said Bogan. “You create an identical habitat and sometimes animals never appear. There is a lot about animal life that we don’t understand. “

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