Presentation on theme: "Lakes of Missouri Volunteer Program University of Missouri-Columbia The Missouri’s Lakes and Reservoirs The Missouri Department of Natural Resources Region."— Presentation transcript:
Lakes of Missouri Volunteer Program University of Missouri-Columbia The Missouri’s Lakes and Reservoirs The Missouri Department of Natural Resources Region V11, US Environmental Protection Agency, through the Missouri Department of Natural Resources, has provided partial funding for this project under Section 319 of the Clean Water Act Tony Thorpe Dan Obrecht Jack Jones
405 Classified Lakes/Reservoirs ~108 are Drinking Water Supply (LC1) 14 are Major Reservoirs (LC2) Most are man-made reservoirs, with about 15 - 20 oxbow lakes.
Of the 405 Classified Waterbodies, we have at least 4 years worth of data on 134 What follows is a summary of the physical features of those 134 waterbodies “A central paradigm of modern limnology is that external nutrient loading, modified by morphology and hydrology, determines the trophic state of a lake.” Jones et al. 2005
Lake Morphology Surface Area Depth Volume Lake Hydrology Watershed Area Residence Time External Loading Land Use
Surface Area Ranges from 6 to 53,814 acres in size, with a median of 103 acres.
Break down by size 30% of classified lakes are 20 acres or less in size. 10% are greater than 300 acres in size.
Average Depth Ranges from 3.7 feet to 62 feet, with a median of 11.6 feet.
Lake Volume Ranges from 48 to 2,700,000 acre-feet, with a median of 1,675 acre-feet. 1 acre-foot = 325,851 gallons 1 acre 1 foot
Watershed Area Ranges from 83 to > 4,000,000 acres, with a median of 2,516 acres.
Residence Time Ranges from 2.6 days to 9 years, with a median of 10.5 months.
Land Cover within watersheds Forest = 0 – 95% Grass = 0 – 78% Crop = 0 – 74% Urban = 0 – 96% Using the 134 classified lakes for which we have >= 4 years worth of data
Land Cover and Water Quality: Row Crop Data points based on summertime averages near the dam
Land Cover and Water Quality: Forest Data points based on summertime averages near the dam