Water, Water, Everywhere ENS102D 3/13/06

Review Water supports the anthropic principle Water is geologically important Water is biologically important Water is ecologically important Water is culturally important Water is socially important

Principles of sustainability as related to water Ecosystems use sunlight as their main source of energy Ecosystems are built upon interrelationships not independence Ecosystems dispose of wastes and replenish nutrients by recycling Ecosystems, regulate the size of member populations Ecosystems, maintain (bio)diversity

How do we use water? What is the major way that each uses water? typical American household business (like 3M) Automobiles a typical MN farm a cattle feedlot Cities (like MSP or Arden Hills) Land developer building a housing subdivision in MN A University like Bethel

So where does our water come from? Use your text and one of the the computers and see if we cannot find answers to this question? Where does our water come from?

So where does our water come from? Groundwater Surface Water Precipitation + Atmosphere Rivers - Mississippi Reservoirs + Lakes Minneapolis - from Mississippi

Watersheds Principle # 1 interrelationships –The watershed conceptThe watershed concept Watershed Quality Varies

Watershed Diagram What is a watershed?

Watersheds Component # 1 Surface Water Withdrawl exceeds recharge The Aral sea All water naturally open to the atmosphere (rivers, lakes, reservoirs, streams, impoundments, seas, estuaries, etc.) and all springs, wells, or other collectors which are directly influenced by surface water.

Watersheds Component #2 Groundwater Withdrawl exceeds recharge The Ogallala Aquifer as an example: level is dropping at the rate of 2 meters per year Water found beneath the surface of the ground.Groundwater is primarily water which has seeped down from the surface by migrating through the interstitial spaces in soils and geologic formations.

Where does our water come from? Water System ID Water System Name Principle County Served Population Served Primary WaterSource Type MN ARDEN HILLS RAMSEY 9750 Purchased surface water MN LITTLE CANADA RAMSEY 8600 Purchased surface water MN MOUNDS VIEW RAMSEY Ground water MN NEW BRIGHTON RAMSEY Ground water MN NORTH SAINT PAUL RAMSEY Ground water MN ROSEVILLE RAMSEY Purchased surface water MN VADNAIS HEIGHTS RAMSEY Ground water MN WHITE BEAR LAKE RAMSEY Ground water MN WHITE BEAR TOWNSHIP RAMSEY Ground water Violations –