To provide Stormwater Management services by maintaining City waterways keeping them free of debris and excessive aquatic vegetation; minimize flooding, and improve water quality in accordance with the National Pollution Discharge and Elimination System (NPDES) best management practices.
The Stormwater Management program encompasses Canal Management, Flood Protection, Pollution Control, Drainage Installation and Guardrail Maintenance.
Canal Management ensures the cleanliness of city maintained waterways, keeping them free of debris and aquatic vegetation. Staff controls the aquatic vegetation by applying chemicals as needed. The removal of tree limbs/roots is also an important aspect of canal management taking a proactive approach to avoid the potential for hazardous pipe obstructions.
The Flood Protection and Pollution Control staff ensures the safety of all commercial and residential properties which is a vital service of the City. The activities include street sweeping and comply with the best management practices of the National Pollution Discharge and Elimination System (NPDES) Stormwater ordinance requirements. The City is a participant in the National Flood Insurance Protection (NFIP) and Community Rating System (CRS) which allows residents and business owners to receive a discount on their flood insurance premiums.
Miramar Canals and Waterways
The Miramar canals are maintained and cleaned on regular basis to remove pollution Understanding pollution and how simple acts such as washing cars, over fertilizing grass, oil leaks or littering can help protect our waterways.
The phosphorous found in canals is a result of dumping detergent and fertilizers into water bodies. The algae and aquatic weeds are a result of the presence of nutrients like phosphorous into drains and water bodies that nourish the plants and increases dramatically the vegetation. These actions affect dramatically the overall beauty, functionality, color and smell of the canals. It also suffocates and kills fish and other wildlife.
Best Management Practice BMP
Stormwater Runoff and Pollutants
Best Management Practices” is a term used to describe different ways to keep pollutants out of runoff and to slow down high volumes of runoff.
Stormwater runoff is water from rain that “runs off” across the land instead of seeping into the ground. This runoff usually flows into the nearest canal, lake or ocean. The runoff is generally not treated. Stormwater runoff can convey more than just water to canals, rivers, and lakes. It carries pollutants including dirt, grease, trash and more from roads, parking lots and other hard surfaces right into storm drains and ditches. They empty directly into our waterways. Storm water can also carry excess nutrients, like phosphorus, which turns our canals, lakes and streams green and smelly and harms fish, plants and other wildlife.
From agricultural land and lawns
From Paved Roads and parking Lots
Any area without ground cover
Bacteria and Nutrients from
Faulty septic systems
Pet and wildlife waste
This is an example of an algae bloom which changes the color of the lake from bright green, red or dark brown. This is often the direct result of pollution by fertilizers leaching from commercial and residential properties. Detergents dumped into the water bodies also contain the phosphorous that can cause algae blooms.
This is an example of non-native aquatic plants. A small amount is needed for the fish to strive in the lake. However, when nutrients are in excess in the water, it creates an overgrowth of these non-native aquatic plants, often referred to as aquatic weeds. The plants can quickly overpower entire bodies of water, choking and killing fish and other wildlife. It clogs up the drainage outlets, makes the lakes unnavigable by boat and makes fishing difficult.
The Grass Carp is a herbivorous, freshwater fish. It was introduced in the United States for aquatic weed control. Grass carps have an elongate, chubby body form that is torpedo shaped. Body color is dark olive, shading to brownish-yellow on the sides with a white belly and large slightly outlined scales. The grass carp grows very rapidly, and can attain nearly 4 feet in length and over 70 pounds. They eat up to 3 times their own body weight daily. They thrive in small lakes and backwaters that provide an abundant supply of fresh water vegetation.
Adults of the species feed exclusively on aquatic plants. They feed on higher aquatic plants and submerged grasses, but may also take detritus, insects, and other invertebrates. The species was deliberately introduced into the United States in 1963 for aquatic weed control. When used for weed control, often the fish introduced to the pond or streams are sterile.
The City uses an industrial storm sewer cleaning and vacuum truck for Storm Drainage Maintenance, Industrial Waste Cleanup, and Vacuum Excavation. The Vacuum Truck is used to clean the debris and pollutants from the catch basins. The Vacuum Truck uses a combination of high pressure water jetting attached to a super sucker vacuum truck which is used to unclog the drainage systems throughout the City of Miramar.
FAQ - Frequently Asked Questions
My pond has a green film on it - what do I do?