20211116 14190800 1.0 FALSE AquaticInvasivePlants_ControlSites 002 0.000 226686.701296 245617.410945 4313878.185906 4348599.138270 1 Projected GCS_North_American_1983 Linear Unit: Meter (1.000000) NAD_1983_UTM_Zone_10N <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.2.0'><WKT>PROJCS["NAD_1983_UTM_Zone_10N",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-123.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",26910]]</WKT><XOrigin>-5120900</XOrigin><YOrigin>-9998100</YOrigin><XYScale>10000</XYScale><ZOrigin>0</ZOrigin><ZScale>99999.999999999985</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>2.0000000000000002e-05</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>26910</WKID><LatestWKID>26910</LatestWKID></ProjectedCoordinateSystem> 20240827 09474500 20240827 09474500 150000000 5000 ItemDescription FGDC CSDGM Metadata Esri ArcGIS 12.3.0.15769 2023_LakeTahoe_AIP_Control Sara Matthews Tahoe Resource Conservation District AIS Control Coordinator South Lake Tahoe California 96150 smatthews@tahoercd.org 530-543-1501 x125 2020-11-30T00:00:00 2021-04-01T00:00:00 Aquatic Invasive Species Control Program Tahoe Resource Conservation District Director of Programs 870 Emerald Bay Road Suite 108 South Lake Tahoe California 96150 info@tahoercd.org 530-543-1501 0.000000 0.000000 This dataset reflects aquatic invasive plant control work from May 2019 to November 2020. Species present and infestation status are based on field visits carried out by contracted dive team. 2019-05-01T00:00:00 2020-11-30T00:00:00 1 -120.166910 -119.934848 39.249431 38.931273 This dataset was compiled by Tahoe RCD to record the status of aquatic invasive plant control sites and document control work implemented at these sites. It includes data obtained from Tahoe RCD, TRPA, USFS, CTC, and California State Parks. This dataset is used to allocate resources and plan aquatic invasive plant control work in the Lake Tahoe Basin Region. <DIV STYLE="text-align:Left;"><DIV><DIV>This shapefile contains records for aquatic invasive plant control projects in the Lake Tahoe Basin Region. This dataset does not include historic infestation sites. Points are generalized and in some cases multiple small, discrete populations may be grouped as a single control site for planning logistics. Data should be interpreted with this in mind. Attributes are listed for aquatic invasive plant species detected at each location, plant (infestation) status, and management (infest) status and control methods implemented in 2019, 2020, 2021, 2022, 2023. Confirmation of species and status was obtained during contracted dive team during field visits. Development of status categories is ongoing and subject to change in future updates to this dataset. Abbreviation Definitions:EWM = Eurasian watermilfoil CLP = curly-leaf pondweedNZM = New Zealand mudsnailInvPlantSp = Aquatic Invasive Plant SpeciesContr = Control Methods DAS = diver assisted suctionSM or surveillance = surveillance monitoringSA = site assessmentMMP SA = Marina Management Plant Site Assessment (different boundary)SA w NZM = Site Assessment with addition of divers tasked with detecting NZM in survey boundary with a focus on future treatment areasInfest_Sta = This attribute describes the management status of the infestation site. This status incorporates current treatment needed, diver effort, and current funding to prioritize planning efforts and future funding. This status does not indicate the amount of plants, level of establishment, or threat level of an infestation. P1- Planning 1: "Passive" Known or possible infestation. Information regarding the location may be insufficient, access to the site may be blocked, or a funding strategy for future treatment has not yet been established. If there is a funding lapse in a control or surveillance project, those sites will be changed to this category until funding plan is resolved.P2 - Planning 2: "Active" Known infestation. Active planning and/or procurement of funds are being actively implemented. Site Assessments, coordination with land owners, Containment, marina-led maintence treatment, or pilot methods testing projects may be being implemented. Active control methods (barriers, diver-assisted suction, UV-C, or dredging) will likely be needed to treat this site. C1 - Infestation Active Control 1: Known infestation. Active control methods (barriers, diver-assisted suction, UV-C, dredging, site preparation, or methods testing) were implemented over the course of the season. C2 - Infestation Hand Removal 2: First time or previously treated control site that only required hand removal to maintain the weed-free status. Over the course of one season, surveillance visits utilizing hand removal may require substantial effort (20 diver hours) beyond the baseline expected surveillance effort. EDRR sites that are discovered and treated with only hand removal during the season will remain in this category until they are accomodated for in the Surveillance Monitoring plan. S1 - Surveillance Higher Risk 1: Previously treated control site. Over the course of one season, no more than 20 divers hours over the expected surveillance effort was required at this site to maintain weed free status.S2 - Surveillance Lower Risk 2: Historic infestation site. AIP have been treated and/or detected in this location. Consecutive surveys over the course of at least three years have shown no detections. Plant_Stat - this attribute describes the general status of the plant establishment at an infestation site. It is a binary attribute to distinguish between established infestations and infestations that have been completely treated and contain little to no plants. Established Infestation = This indicates a location where aquatic invasive plants are known to be established. This is either because it has not yet been treated, it has only been partially treated, or a high volume of plants return after treatment. It does not indicate whether control work is currently taking place at this location. Surveillance= This indicates a location where aquatic invasive plants have been previously treated. Little to minimal regrowth has been documented. Projection: NAD_1983_CORS96_UTM_Zone_11N, Transverse MercatorDatum: D_NAD_1983_CORS96</DIV></DIV></DIV> Sara Matthews, Tahoe Resource Conservation District (Tahoe RCD) Aquatic invasive species AIS Aquatic invasive plants AIP lake control Lake Tahoe Sara Matthews Tahoe Resource Conservation District AIS Control Coordinator South Lake Tahoe California 96150 smatthews@tahoercd.org 530-543-1501 x125 Sara Matthews 2021-11-30T00:00:00 Aquatic invasive species, AIS, Aquatic invasive plants, AIP, lake, control, Lake Tahoe California, Nevada, Lake Tahoe <DIV STYLE="text-align:Left;"><DIV><DIV>None. </DIV></DIV></DIV> Enterprise Geodatabase Feature Class 0.000 https://tahoercd.org/our-work/aquatic-invasive-species/tahoe-ais-control-monitoring/ dataset EPSG 6.13(3.0.1) 0 Simple FALSE 0 TRUE TRUE AquaticInvasivePlants_ControlSites Feature Class 0 Aquatic invasive plant control sites in Lake Tahoe Region Field visits carried out by contracted dive team OBJECTID FID OID 4 10 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Shape Geometry 8 0 0 Feature geometry. Esri Coordinates defining the features. Site_Name Site_Name String 50 0 0 Name used to describe control site Tahoe RCD Infest_Sta_2024 Infest_Sta_2024 String 255 0 0 Infest_Sta_2023 Infest_Sta_2023 String 255 0 0 Infest_Sta Infest_Sta_2022 String 50 0 0 Status of aquatic invasive plant control site - used for planning to describe effort needed to maintain or control infestation. Infestation – Inactive (II):Known or possible infestation. Information regarding the location may be insufficient, access to the site may be blocked, or a funding strategy for future treatment has not yet been established. Infestation – Planning (IP):Known infestation. Planning and/or procurement of funds are being implemented. Containment may be being implemented. Active control methods (barriers, diver-assisted suction, UV-C, or dredging) will be needed to treat this site. Infestation – Active Control (IAC):Known infestation. Active control methods (barriers, diver-assisted suction, UV-C, dredging, site preparation, or methods testing) were implemented over the course of the season. Infestation – Maintenance (IM): Previously treated control site that is at higher risk of reestablishment. Active control methods such as barriers, diver-assisted suction, and dredging are not required to maintain the weed-free status. Over the course of one season, surveillance visits utilizing hand removal may require substantial effort (more than 10 individual plants/more than a half day to complete). EDRR sites that are discovered and treated with only hand removal during the season will remain in this category until at least one season of surveillance places it into S1. Surveillance – 1 (S1):Previously treated control site. Over the course of one season, surveillance visits have resulted in the detection/removal of less than 10 individual aquatic invasive plants. Each surveillance visit requires a half day or less to complete. Surveillance – 2 (S2):Historic infestation site. AIP have been treated and/or detected in this location. Consecutive surveys over the course of at least two years have shown no detections. Tahoe RCD, records of previous work, site visits Infest_Stat_2021 Infest_Stat_2021 String 255 0 0 Infest_Sta_2020 Infest_Stat_2020 String 255 0 0 Infest_Sta_2019 Infest_Stat_2019 String 255 0 0 Infest_Sta_2018 Infest_Sta_2018 String 255 0 0 Contr_2024 Contr_2024 String 255 0 0 Contr_2023 Contr_2023 String 255 0 0 Contr_2019 Contr_2019 String 50 0 0 Describes control work that was implemented during the 2019 control season (May-Nov). Please visit tahoercd.org for a complete description of control methods. Tahoe RCD, AISCC Contr_2020 Contr_2020 String 50 0 0 Describes control work that was implemented during the 2020 control season (May-Nov). Please visit tahoercd.org for a complete description of control methods. Tahoe RCD, AISCC Info Info String 254 0 0 Additional information about control site. Tahoe RCD Contr_2021 Contr_2021 String 254 0 0 Contr_2018 Contr_2018 String 255 0 0 Contr_2022 Contr_2022 String 254 0 0 20240827 Sara Matthews Tahoe Resource Conservation District AIS Control Coordinator South Lake Tahoe California 96150 smatthews@tahoercd.org 530-543-1501 x125 Sara Matthews Tahoe AIS Control Tahoe RCD 870 Emerald Bay Road CA 96150 tahoeaiscontrol@gmail.com (530)543-1501