Tag Archives: WA drought

Environment, Rainwater Catchment

Will El Nino Bring Drought Relief?

downpour-61916_640California may think it’ll finally see some relief from the extreme drought that has gripped the region for several years because this year’s El Nino is predicted to be massive, bringing heavy rains – and with that the potential of mudslides and flooding in southern California.

CBS/AP reports: “Weather models this year show a 60 percent chance of above-average rainfall in Southern California, but that figure declines farther north…”

There’s a downside. Northern portions of California and parts of Nevada are only looking at between a 50% chance, down to 33% as you head north. Unfortunately, most of the state’s reservoirs are located in the northern portion of California, meaning heavy rains in southern California won’t do much to alleviate drought conditions as its infrastructure is designed to channel rainwater away from homes to prevent flooding – and water is washed out to sea.

The Pacific Northwest is expected to continue being very dry and drought conditions will persist mostly due to warm weather causing reduced snowpack across much of the Cascades Range and Olympic Mountains in Washington. So, while residents and businesses are being diligent about reducing water usage, there is certainly more that can be done on a municipal, county, federal and individual level.

Ben Franklin

“When the well is dry we know the value of water”, Benjamin Franklin

Residential Rainwater Collection

How Can Urban Homes Benefit From Rainwater Collection?

RBRWC9241510Just like rural homeowners, urban households can benefit from rainwater collection. Unlike rural homes, most city homes have less space available for storage. Slim line water tanks and underground storage options allow those who live in an urban environment to collect, store, and use rainwater for a number of purposes.

You do not need a lot of capacity of storage for supplemental use of rainwater. For every inch of rainfall, a thousand square feet of surface will yield 623 gallons of water. A 2,000 square foot roof in Seattle will yield over 44,000 gallons of water annually. Even with only 3,000 gallons of storage, winter use can be as much as 100% or can be stored for summer irrigation demands. See chart below  – an average 2,000 square foot roof yields over 44, 000 gallons with only 3,000 gallons of storage capacity based on 120 gallons of daily demand.  (click the image for larger view)

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Rainwater is a clean source of water that needs very little treatment for irrigation, toilet flushing, or laundry facilities. Further treatment with UV disinfection allows for whole house demands including drinking water. With more demands on our water districts due to drought conditions, every drop helps. Why not benefit from this natural resource, rather than send it down the curbside drain?

Environment, Rainwater Catchment

Welcome to Washington’s Rainy Season

Seattle Downtown After RainOctober 1 is the official start of the rainy season in Washington State and even though annual rainfall met expectations, another dry, warm winter is predicted for the region. This means that the snowpack – the summer rain bank (see what I did there?) will be missing in action for another year.

According to the Department of Ecology’s drought page, “despite recent rains and some boost for stream flows, extreme drought still covers two-thirds of Washington state.”

Now would be a good time to come up with a personal drought contingency plan, since Mother Nature isn’t going to provide relief any time soon. Washington state’s drought plan, released in 1992, refers to fish and timber harvesting, but makes no mention of rain harvesting.

When planning a rainwater collection system, you must account for the amount and intensity of the average rainfall in your area. That information is usually available at the county level, but can also be captured via National Oceanographic and Atmospheric, Administration (NOAA) and the National Climatic Data Center.

For a small system, you can head to your local hardware store, purchase a rain barrel, hook it up and, at the very least, can collect water for your garden.

For a whole house, or commercial system, work with a pro that knows how to design and install the most thoughtful system, which is customized to your specific needs. Ask questions; provide information about your roof size and materials, family size, whether you want to capture water for drinking, irrigation or laundry, etc.

When you work with an accredited professional rainwater harvesting installer and designer, the outcome will be a system to meet your water needs for years to come – and it will add value to your home or business.