1.0 DCPLUS 20230904 21125600 20230904 21125600 https://www.arcgis.com/sharing/rest/content/items/5dc1f75ca802432ea0a920595478c79f/info/thumbnail/thumbnail1693862014574.png https://www.arcgis.com/home/item.html?id=5dc1f75ca802432ea0a920595478c79f 5dc1f75ca802432ea0a920595478c79f Feature Service https://services.arcgis.com/UXmFoWC7yDHcDN5Q/arcgis/rest/services/OC_Hydstra_Station_Data_View/FeatureServer OC Hydstra Station Data View 2023-09-04T21:12:56 2023-09-04T23:14:17 Realtime Orange County California Hydstra Water Management Flood Monitoring Natural Resource Management Rainfall Orange County Hydstra Flood Monitoring Station Cumulative Rainfall Data Feed (5-minute interval) <h3>OC Hydstra Flood Station Data Feed Description</h3><p>This feature layer contains the cumulative data (multiple temporal observations per station) processed by Orange County's Hydstra Flood Monitoring ALERT System Station Data Feed on latest rainfall amounts and rates for every 5-minutes interval.<br />The following list provides the temporal levels of rainfall data reporting summary:</p><ul><li>Hourly Levels:</li><ul><li>Current Hourly Rainfall Intensity (inches)</li><li>1-Hour Rainfall (inches)</li><li>3-Hours Rainfall (inches)</li><li>6-Hours Rainfall (inches)</li><li>12-Hours Rainfall (inches)</li></ul><li>Daily Levels:</li><ul><li>1-Day Rainfall (inches)</li><li>2-Day Rainfall (inches)</li><li>3-Day Rainfall (inches)</li></ul></ul><p></p><h3>Historical Summary</h3><p>ALERT stands for Automated Local Evaluation in Real Time, a method of using remote sensors to transmit data to a central computer in real time. This standard was developed in the 1970s by the National Weather Service and has been used by organizations of all levels such as the National Weather Service, Army Corps of Engineers and Bureau of Reclamation.</p><p>Orange County initiated its ALERT System in 1983 to provide additional quantitative weather information to support storm operations personnel. Sensors were initially installed along the Santa Ana River and in four South County Channels: San Juan Creek, Arroyo Trabuco Creek, Oso Creek, and Aliso Creek. The system has subsequently been expanded to monitor other flood control channels and retarding basins.</p><p>The Orange County ALERT System consists of three computer base stations and three radio repeaters. The radio repeater located on Santiago Peak receives and re-transmits telemetry from field sensors located in Los Angeles, San Bernardino, and Orange Counties. One of the two receiver base stations located at the OC Public Works yard on Glassell Street in Orange is a server connected to the OC Public Works Department Intranet, providing access to Department personnel from their workstations. In response to extreme weather conditions the OC Public Works - Department Operations Center (DOC) opens to coordinate monitoring and response to threats of flooding, mudslides, and debris flows. During these periods, the ALERT System provides crucial continuous information to the DOC.</p> Dr. Kostas Alexandridis, GISP, Orange County Public Works, OC Survey Geospatial Services The Hydstra ALERT Flood monitoring stations are maintained by OC Public Works/OC Survey Field Services, and the OC Watershed group. The feed data and associated resources (maps, apps, endpoints) can be used under a <a href='https://creativecommons.org/licenses/by-sa/3.0/' target='_blank' rel='nofollow ugc noopener noreferrer'>Creative Commons CC-SA-BY</a> License, providing attribution to OC Public Works, OC Survey Geospatial Services. <div><br /></div><div>We make every effort to provide the most accurate and up-to-date data and information. Nevertheless the data feed is provided, 'as is' and OC Public Work's standard <a href='https://www.ocgov.com/contact-county/disclaimer' target='_blank' rel='nofollow ugc noopener noreferrer'>Disclaimer</a> applies.</div><div><br /></div><div>For any inquiries, suggestions or questions, please contact:</div><div><br /></div><div style='text-align:center;'><a href='https://www.linkedin.com/in/ktalexan/' target='_blank' rel='nofollow ugc noopener noreferrer'><b>Dr. Kostas Alexandridis, GISP</b></a><br /></div><div style='text-align:center;'>GIS Analyst | Spatial Complex Systems Scientist</div><div style='text-align:center;'>OC Public Works/OC Survey Geospatial Applications</div><div style='text-align:center;'><div>601 N. Ross Street, P.O. Box 4048, Santa Ana, CA 92701</div><div>Email: <a href='mailto:kostas.alexandridis@ocpw.ocgov.com' target='_blank' rel='nofollow ugc noopener noreferrer'>kostas.alexandridis@ocpw.ocgov.com</a> | Phone: (714) 967-0826</div></div> -118.0976244997278 -117.41356165161568 33.93238167823839 33.43543533131521 1 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5dc1f75ca802432ea0a920595478c79f https://services.arcgis.com/UXmFoWC7yDHcDN5Q/arcgis/rest/services/OC_Hydstra_Station_Data_View/FeatureServer Feature Service EPSG