S4_Estimates of Research and Treatment Costs for Control of Water Hyacinth

<div>S4_Cost_Methods_Harms.pdf provides supplementary background information on methods used to estimate costs for research and control of water hyacinth.</div><div><br></div><div>S4_WH_Costs_peryear.xlsx contains research and management cost data for control of water hyacinth.</div><div><br></div

Water Hyacinth Cover in Louisiana (1975-2013) by season and drainage area

<p>Louisiana water hyacinth survey data for 1974 – 1999 was provided during those years by James Manning (ret.) and Don Lee (ret.), LDWF. Survey data for 2000 – 2006 and 2008 - 2014 were provided by Mr. Alexander Perret, LDWF in 2014. 2007 data were not available.</p