studies have revealed use of rather sophisticated systems in ancient cultures. For example, in approximately 4000 years before present, cities such as were designed to have storm drains and channels to collect precipitation runoff. At Cretan storm drains include stone lined structures large enough for a person to crawl through. Other examples of early civilizations with elements of stormwater drain systems include early people of such as and the in .
Why does Charlotte-Mecklenburg Stormwater Services care about invasive plants?
These plants can obstruct the safe and efficient flow of stormwater. Drainage systems may provide a pathway for seeds and seedlings of invasive plants to float downstream and spread to other areas. Through the Invasive and Nuisance Plant Management Program, Storm Water Services identifies invasive species and works to control their growth. Examples of targeted plants are: kudzu, Japanese knotweed, Japanese and Chinese wisteria, Japanese honeysuckle, privet, mimosa, and tree of heaven.
Resilient and Economically Beneficial
A Memorial Day flood led Houston to postpone its planned celebration of the new Buffalo Bayou Park, a piece of Bayou Greenways. The flood was something of a test: While much of the city suffered because of the floodwaters the park passed with flying colors, acting as a stormwater channel while park infrastructure weathered the deluge as intended, Anne Olson, president of the Buffalo Bayou Partnership, a nonprofit organization focused on redeveloping and restoring the bayou, told a local news site.
Such water management projects can pay economic dividends to cities, says Henk Ovink, a Dutchman who was recently appointed by Dutch government ministers as the first special envoy for international water affairs for the Netherlands. Having danced with the sea and four river deltas for nearly a millennium, the Netherlands has created something of a cottage industry imparting hard-won water management wisdom to other countries — among them, the United States, the Philippines, Japan, Colombia, Vietnam, Korea, Bangladesh, France and Guyana.
RICHMOND, VA. — In response to existing conditions and to increase public awareness of the potential for a significant drought event, the Virginia Department of Environmental Quality has issued a “drought watch” advisory for the Roanoke River basin.
Lack of sufficient rainfall and above-average temperatures have continued to cause drought impacts for the area.
The affected localities and public water suppliers include Patrick, Franklin, Roanoke, Henry, Bedford, Pittsylvania, Campbell, Halifax, Charlotte and Mecklenburg counties and the cities of Danville, Martinsville, Roanoke and Salem in the Roanoke River basin.
A drought watch advisory is intended to increase awareness of conditions that are likely to precede a significant drought event and to facilitate preparation for a drought. This advisory is being issued because drought watch indicators in the state’s Drought Assessment and Response Plan have been met. According to the Virginia Drought Monitoring Task Force, an interagency group representing state and federal agencies, the primary factors contributing to the declaration of the drought watch advisory are:
— Precipitation deficits since October 1, 2014, are 6 to 12 inches in much of the Roanoke River basin.
— Stream flows are lower than 90 percent of recorded flows, indicating a moderate to severe hydrologic drought — a period of below-average water content in streams, reservoirs, aquifers, lakes and soils.
— Groundwater levels are lower than 75 percent to 90 percent of previously recorded levels.
— According to the National Weather Service, dry conditions may continue, with a likelihood of less than normal rainfall through the remainder of September.
DEQ is sending notifications to all local governments, public water works and private sector water users in the affected area, and is requesting that they prepare for the onset of a drought event by developing or reviewing existing water conservation and drought response plans. Through the drought watch advisory, Virginia is encouraging localities, public water suppliers and self-supplied water users in the affected localities to voluntarily take these steps to help protect current water supplies:
— Minimize nonessential water use.
— Review existing or develop new local water conservation and drought contingency plans and take conservation actions consistent with those plans.
— Include water conservation information on local websites and distribute water conservation information as broadly as possible.
— Continue monitoring the condition of public waterworks and self-supplied water systems in partnership with the Virginia Department of Health.
— Impose water use restrictions when consistent with local water supply conditions.
— Aggressively pursue leak detection and repair programs.
The next stage after a drought watch would be a “drought warning,” which would be issued if conditions warrant. Drought warning responses are required when the onset of a significant drought event is imminent. Water conservation and contingency plans that have been prepared during a drought watch stage would begin to be implemented.
From the perspective of the Commonwealth, water conservation activities at this stage would generally be voluntary. This does not preclude localities issuing mandatory restrictions if appropriate. Statewide information on the current drought status is available on the DEQ website at http://www.deq.virginia.gov.
From: Bill Hayden
Sent: September 15, 2015 at 9:31 am
The Tree Benefit Calculator allows anyone to make a simple estimation of the benefits individual street-side trees provide. This tool is based on i-Tree’s street tree assessment tool called STREETS. With inputs of location, species and tree size, users will get an understanding of the environmental and economic value trees provide on an annual basis.
The Tree Benefit Calculator is intended to be simple and accessible. As such, this tool should be considered a starting point for understanding trees’ value in the community, rather than a scientific accounting of precise values. For more detailed information on urban and community forest assessments, visit the i-Tree website.
The NYC Department of Environmental Protection recently announced plans to install green infrastructure in eastern Bedford-Stuyvesant, Brooklyn as a means to prevent stormwater from polluting Newtown Creek. The proposed green infrastructure would use natural systems such as soil and vegetation as an effective stormwater management solution that would protect water quality while also beautifying the neighborhood. According to DNAinfo, Bed-Stuy’s green upgrade will be funded by water and sewer bills.
Read more: NYC DEP Unveils Plan to Add Stormwater-Filtering Green Infrastructure to Bed-Stuy Streets | Inhabitat New York City
The maintenance of rivers and floodplains can make an important contribution to flood protection. Waters conservation used to be understood mainly as verification of fast discharges, which was achieved through regular mowing. Furthermore, the waterways had to be navigable and accordingly required water depths had to be accomplished through maintenance measures (e.g. digging). Today, sustainable waters conservation is used to guarantee requirements for flood protection and to support also a natural development of the water.
By means of maintenance plans, places, where a decelerated discharge and a resultant backwater (storage) is possible and where mowing and cleaning operations have to be done to allow a contaminant- free discharge can be defined.