League to Save Lake Tahoe 20190110 vector digital data https://www.wildlife.ca.gov/Data/BIOS ftp://ftp.wildlife.ca.gov/BDB/GIS/BIOS/Public_Datasets/2700_2799/ds2774.zip https://www.arcgis.com/home/webmap/viewer.html?webmap=e0320c0c32f241459029060a7881a0bc&extent=-120.6604,38.8132,-119.3146,39.3526 This dataset was created to provide data on locations of the aquatic invasive plants Eurasian watermilfoil and curlyleaf pondweed to non-profits and government agencies working to address aquatic invasive species in the Lake Tahoe Basin, so that any new infestations of these plants can be identified and addressed quickly before they are able to spread to other parts of the Lake. Eyes on the Lake (EOL) is a volunteer, citizen science program led by the League to Save Lake Tahoe, in partnership with the Tahoe Resource Conservation District and the Tahoe Regional Planning Agency, as well as other organizations that make up the Lake Tahoe Aquatic Invasive Species Program. The two main targets of the Eyes on the Lake program are Eurasian watermilfoil and curlyleaf pondweed. Both are already established in many locations throughout Lake Tahoe and are difficult and expensive to control. These aquatic invasive plants cause clarity loss, harm native species, and pose a significant threat to the ecology of the Lake. The “Aquatic Invasive Plants in Lake Tahoe (2013-2017)” map utilizes Eyes on the Lake data collected from 2013-2017 and data published in the University of Nevada, Reno's (UNR) “Implementation Plan for the Control of Aquatic Invasive Species within Lake Tahoe”. The map also includes other layers based off information collected from other partner agencies throughout the Tahoe Basin. 20130602 20181210 Unknown Planned Annually -120.195804 -119.931402 39.352235 38.928167 None Citizen science Aquatic invasive plants Lake Tahoe ISO 19115 Topic Categories biota environment None Lake Tahoe Lake Tahoe Basin California None None League to Save Lake Tahoe Zack Bradford Natural Resources Manager League to Save Lake Tahoe Zack Bradford Natural Resources Manager Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Vector Entity point 583 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds2774 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. Date_ Date of observation Activity Activity that the observer was engaged in at the time of the observation Location General location where the observation occurred Latitude Latitude for the location of the observation, based off GPS, approximation, or dropping a pin on a map Longitude Longitude for the location of the observation, based off GPS, approximation, or dropping a pin on a map Plant Eurasian watermilfoil or curlyleaf pondweed Type_ Whether the plant was attached to the substrate, reported as an “Infestation”, or floating on the surface or a fragment on the beach, rocks, etc., reported as a “Fragment” Substrate The dominant substrate present where the observation occurred Natives Any native aquatic plants observed Clams Whether the observer noticed any Asian clams or Asian clam shells (Asian clams are the only non-aquatic-invasive-plant that Eyes on the Lake volunteers are asked to report on) 20190111 League to Save Lake Tahoe Zack Bradford Natural Resources Manager FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time