1 / 16

Lagrangian Analysis of Storm Runoff Water

Lagrangian Analysis of Storm Runoff Water from the Maumee River into the Western Basin of Lake Erie. Heidelberg University National Center for Water Quality Research David B. Baker December 1, 2011 U. of Toledo, Lake Erie Center.

angie
Download Presentation

Lagrangian Analysis of Storm Runoff Water

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lagrangian Analysis of Storm Runoff Water from the Maumee River into the Western Basin of Lake Erie Heidelberg UniversityNational Center for Water Quality Research David B. Baker December 1, 2011 U. of Toledo, Lake Erie Center

  2. What is the fate and effect of nutrients entering the Western Basin during storm runoff events? To address these questions we conducted a Lagrangian study of this runoff event April 30, 2010 What is the relationship between the sediment loading events beginning March 1, 2010 and the satellite image of April 30, 2010? Where has most of the sediment been deposited? What has happened to the dissolved nutrients that accompanied the pulsed sediment loads? Where and how much mixing has occurred between Maumee storm event water and Detroit River inputs?

  3. Lagrangian Sampling - follow and sample water mass as it flows downstream and into the lake. Lagrangian Interpretation - use frequent sampling at a grid of stations coupled with chemical markers of discrete water masses. April 30, 2010 20 21 17 18 22 16 19 15 14 13 12 11

  4. Lagrangian Sampling 12 Stations Sampling depth 1 meter below surface 1 meter above bottom 20 21 17 Algal Sampling 18 22 16 19 15 14 Collection Dates: 13 12 11 Algal Sampling This sampling program was initiated in cooperation with the following charter boat captains and crew: Paul Pacholski and Raul Salinas Kim Salinas and Jason Gostiaux Algal Sampling Algal Sampling Algal Sampling

  5. Blue, dashed line reflect base flow conditions, top samples Red, solid lines reflect storm runoff conditions, top samples

  6. Blue, dashed line reflect base flow conditions, top samples Red, solid lines reflect storm runoff conditions, top samples 12 14 15 16 18 21 13 11 Station Number Fig. 5 Figure 5. Nitrate-N concentrations during low flows (dashed lines) and high flows (solid lines) along transect stations.

  7. 1.3 km3 Figure 5. Hydrograph for the Maumee River at Waterville for the period between July 1, 2009 and June 30, 2010. Total Volumes of water delivered to lake. 0.88 km3

  8. Landsat Image of August 29,2007 Landsat Image of August 29,2007 1 km3 would cover 64 square miles at 7.4 meters depth. Date of Landsat Image

  9. Data from Dr. Robert Vincent, BGSU

  10. Data from Dr. Robert Vincent, BGSU

  11. Between mid-February and early June: • About 6 km3 of water moved past Waterville and into the Western Basin • This water had an average flow-weighted dissolved reactive phosphorus concentration of about 0.087 mg/L. • This water had an average flow-weighted concentration of total phosphorus of 0.443 mg/L. • These water masses could occupy very large areas with the southern portion of the Western Basin and beyond.

  12. Project Status • We learned a lot during our pilot Lagrangian studies. • We have proposals in hand for expanding the studies. • Working with charter boat captains is a very efficient and effective way to conduct the sampling. • Need to interact with modelers to be sure the data collection programs meet the calibration needs of linked hydrodynamic-ecosystem models.

More Related