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Storm water is any type of precipitation that runs off a surface such as roofs, sidewalks, parking lots or roads into which it cannot seep. As cities expand and more roads, parking lots, and buildings are constructed, the way in which precipitation run-off can move through the landscape becomes more important and challenging. The water cannot remain on the surface without causing potential damage or diminishing the structural integrity of buildings and other manufactured surfaces. As a result, systems have been developed and engineered to manage storm water as it rains and snows.
For a brief moment, let's look at the basics of the water cycle:
As you may notice in this diagram, this is a completely natural environment. Regular surface runoff cannot occur once buildings, roads and other impermeable surfaces are constructed. This disrupts the water cycle and causes a variety of issues. The solution is to transfer the water in a similar pattern mechanically. Here is a diagram of a storm water system:
An important note to make from this is that the storm water and sewer lines are separate. The storm water falls as precipitation, flows over buildings and roads into the manholes where it then travels through pipe networks to storage basins and into natural or man made ponds or lakes. These man made lakes should not be mistaken for natural recreation areas; though wildlife may flourish around an open storm water basin, the water is often contaminated with oil from car drippings, pesticides from residential lawns and sediments of heavy metals especially around industrial areas (USEPA 2001). This water is not treated or used for drinking purposes generally because of these contaminants.
It is crucial to manage stormwater for several key reasons. From the health of local waters and aquatic life to flood risk mitigation, the correct management of stormwater is imperative.
Improperly managed stormwater can reduce moisture replenishment in the soil and minimize groundwater recharge. Soil moisture is essential for vegetation, while loss of groundwater recharge can severely reduce stream baseflow - water necessary for aquatic life. By managing stormwater correctly, the hydrologic cycle can be maintained to ensure healthy plant and aquatic life.
Without adequate stormwater maintenance, the risk of flooding, especially in urban areas, is greatly increased. As water cannot be absorbed into the concrete that covers large swaths of towns and cities, the excess water from rain and thunderstorms must be managed to prevent loss of life and property damage by flooding.
While erosion is a normal part of stream behaviour, excess stormwater can greatly increase the amount of erosion as abnormal amounts of water enter streams during storms. This extra water increases both the volume and rate at which water - and the sediment in the water - is delivered to streams. This extra water can increase erosion on stream banks and beds, damaging the natural form of these streams. The degradation of these streams can lead to a massive decline in plant and animal diversity. Proper stormwater management can effectively mitigate these risks.
There are many precautionary measures besides the drainage network to prevent storm water from mixing with our drinking water resources, especially where our cities and roads are located directly adjacent to reservoirs. Here are some additional features throughout our cities that you may not realize are for storm water management:
The cumulative effects of runoff being left unchecked can be dangerous. Inspection of each part of the storm water management system is key to maintaining the water cycle balance over the long term. Deep Trekker ROVs are used to inspect these networks. If do you have a system that's overdue for an inspection, contact us to hear how we can help you.
Deep Trekker builds robust underwater inspection systems in the form of pipe crawlers and mini-remotely operated vehicles (ROVs). All Deep Trekker products are completely portable with on-board lithium batteries that provide 4-8 hours of run time, enough to do an entire inspection day’s work. The designed emphasis on portability and quick deployment means no additional components such as generators or dedicated service trucks are required. This also results in significant cost reductions and the ability to easily inspect in more remote areas.
The DTG3 ROV system is the perfect tool to perform storm water basin inspections. Deep Trekker ROVs are built using a patented pitching system that allows the ROV to fly up, down, side to side, back and forth with only two thrusters. It is extremely easy to use and is operated with a game-style pad controller housing an integrated super bright viewing screen. Inspectors have everything at hand to monitor and inspect any system with ease.
A great example is Morris-Riley Development Management LLC, a Florida area asset management company that services a storm water irrigation system home to over 6,000 homes, 1,000,000 acres of commercial space and two golf courses. They use their two DTG3 ROVSto inspect every inch of the entire network.
The DTG3's compact and spherical shape allows it to fit into as small as 14 inch pipes, with a 270 degree rotating camera allowing for thorough inspections even within those tight, confined spaces. The low light (0.01 lux) HD camera and high efficiency LED light mounted to the camera allow for inspections of "better than human eye" quality. This is important when entering murky waters with no direct sunlight.
Morris-Riley ROV pilots are able to lower the ROV by its tether into the pipes through access points, then view the live feed from their 5.6 inch LCD screen on the handheld controller. On extremely bright, sunny days, the pilot uses their Digital Video Recorder , allowing them to document every inch of their inspection. The DTG3 has up to an 8 hour battery life, allowing it to be deployed from even the most remote access points with no generators necessary.
The DT340 Pipe Crawler system is quickly becoming the "go-to" system for storm water pipe and drain inspections. With various wheel sizes and track options, Deep Trekker’s pipe crawler system is designed to effectively operate within a wide variety of pipe size inspections and soil types. The DT340S system sports a pan/tilt/zoom camera, steerable wheels and the same easy-to-use controller found on other Deep Trekker ROV systems.
Let us help find the right ROV for your underwater projects and applications
Like any structural system, the integrity of infrastructure must be monitored and maintained. Regular inspections to ensure the condition of the pipes, drains, basins and other structures are imperative for safe storm water management. Issues like leaks, cracks, blocked pipes and sediment build up are common challenges that should be identified and addressed quickly. Submersible remotely operated vehicles (ROVs) are an effective, easy and cost-saving option for infrastructure inspection.
Deep Trekker’s underwater ROVs provide a safe and cost effective alternative to hiring divers, while pipe crawlers allow operators to explore pipes that are inaccessible to humans. The battery powered robots do not require topside power, making them easily portable and easy to deploy. Powerful cameras provide operators with a complete view of the area they are inspecting while also allowing for inspections to be recorded or photographed for further review. Add ons for the underwater ROVs and the pipe crawlers give operators advanced options such as laser scalers, Cygnus thickness gauges, and elevating arms.
Municipalities and contractors can be confident that they are providing the best possible storm water management system with regular inspections of key structures. Inflows, outflows, manholes, internal pipes and water basins must all be inspected regularly to ensure that they are operating at full capacity to prevent issues. Frequent inspections are key, as deficiencies can often multiply and compound as time goes by. By conducting consistent inspections, imperfections can be addressed before they become a costly issue.
Learn more about how Deep Trekker ROVs are used in municipalities or reach out to an industry expert today.
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