Download to read offline
More Related Content
Field trip
- 1. Water Quality inSarasota Bay LID in Action
- 2. What is LID? LowImpact Development Stormwater management systems an innovative stormwater management approach with a basic principle that is modeled after nature
- 3. Low Impact DevelopmentTechniques Rain Barrels & Cisterns Rain Gardens Tree Box Filters Soil Amendments Permeable Pavers Green Roofs
- 4.
- 5. Cisterns A cistern ismore expensive than a rain barrel, but it is a more comprehensive system to provide water for the entire landscape.
- 6. Rain Gardens Plant arain garden! Rain gardens are designed to reduce stormwater that runs off individual properties into our bays.
- 7. Rain Gardens 10,000 RainGardens Project
- 8. Soil Amendments Soil amendmentsimprove the physical properties of soils. The best soil amendments increase water- and nutrient-holding capacity and improve aeration and water infiltration.
- 9.
- 10. Runoff is directedto the tree box filter, where it is cleaned by vegetation and soil before entering a catch basin. The runoff collected in the tree-boxes helps irrigate the trees. TREE BOX
- 11.
- 12. Pervious Concrete Asphalt –standard Concrete – pervious • Created with large air spaces • Allows water to soak right in • Less polluted runoff to Sarasota Bay • More infiltration to groundwater
- 13. Reduce Pavement andIncrease “Green Space”
- 14.
- 15.
- 17. What are your ideas? Thinkabout where you live • What watershed do you live in? • What can you do to protect your watershed? • Could you use any of the low impact development techniques presented here?
- 18. Fred the Fish Howdoes pollution affect our wildlife? • What happens to Fred the Fish as he travels down a river?
- 19. Fred meanders downthe river. How is Fred???
- 20. Fred swims intofarm country. He passes by a plowed riverbank. How is Fred??? Turbidity – measure of how clear the water is
- 21. Fred nears ahousing development. Fertilizers are used by farms and lawns are washed into the water How is Fred???? Plants grow Causes an algae bloom Plants die Decomposers break down the decaying plants Bacteria use up oxygen Dissolved oxygen in water decreases Dissolved oxygen, Phosphate and Nitrate
- 22. Fred now swimsunder a bridge. How is Fred???
- 23. Fred continues hisjourney and passes a group of cows. How is Fred?? Dissolved Oxygen, Nitrate Animal waste Dissolved oxygen
- 24. Fred swims pasta park. TRASH!!!!!! How is Fred???
- 25. Fred swims pasta factory. Hot water is dumped into the river. Hot water holds less oxygen then cold water. How is Fred???? Dissolved oxygen and temperature
- 26. Fred swims pasta sewage treatment plant. How is Fred??? Dissolved oxygen Human waste DO, Nitrate and Coliform
- 27. Poor Fred swimspast a hazardous waste dump. Toxic chemicals are leaked into the river. How is Fred?? pH is acidic or basic or alkaline
- 28.
- 29. Water Quality Test •Dissolved oxygen • Temperature • Turbidity • Phosphate • Nitrate • pH • Salinity
- 30. Temperature • Temperature isimportant because it affects the amount of dissolved oxygen in the water. • Cold water will hold more oxygen than warmer water. • Thermal pollution from the factories can cause temperature changes that can be damaging to the aquatic ecosystem.
- 31. Dissolved Oxygen (DO) Oxygengas that is dissolved in water •DO is the most important to the health of the water. All aquatic animals need oxygen to survive. •High levels of bacteria from sewage or a large amount of rotting plants can cause the % of oxygen in the water to decrease.
- 32. pH • pH -measurementof how acidic or basic the water is.
- 33. Phosphate and Nitrate •Plant nutrients 1. Plants grow and grow and grow 2. Causes an algae bloom 3. Plants die 4. Decomposers break down the decaying plants 5. Bacteria use up oxygen 6. Dissolved oxygen in water decreases
- 34. Turbidity • Turbidity: Measureof the water clarity • • Not the same as the color of the water. Dark colored water can be still be clear. • Caused by soil erosion, urban runoff and algal blooms.
- 35. Salinity • Amount ofdissolved salt content in water –Sea water - 35 -50 ppt –Brackish – 1 – 35 ppt –Freshwater – under 1 ppt
- 36.