Orange County NC Website
Browse       Search
• Network should mainly utilize climatic effects (regolith) observation wells to monitor <br /> groundwater storage. <br /> B. Secondary Goal: <br /> • Monitor variations in groundwater levels across the nine main bedrock lithologies. <br /> • Terrane effect (bedrock) observation wells should be completed in each of the nine <br /> main bedrock lithologies. <br /> Latest Activities <br /> ■ Added bedrock wells: <br /> ■ Former 911 Center <br /> ■ Duke Forest 4D <br /> ■ Installed wells at: <br /> ■ Northeast District Park Site <br /> ■ Blackwood Farm <br /> ■ Working on agreement with TLC for use of additional bedrock well. <br /> DWR Web Site <br /> ➢ All data is available on NCDENR Division of Water Resources web site: <br /> http://www.ncwater.orq/Data and Modelinq/Ground Water Databases/leveltable.php? <br /> tl =1&net=oranqe&inactive= <br /> ➢ Bedrock Well Data Example <br /> ➢ Statistics Example <br /> What's Next? <br /> ➢ Continue to collect data and update web site. <br /> ➢ Consider installing automated rain gage(s) to collect precipitation data. <br /> ➢ Replace transducers as needed. <br /> Tom Davis said groundwater level data is collected every hour from each of the 11 <br /> wells. He said he periodically downloads this data and makes it available to the public on the <br /> DWR website. <br /> He reviewed a graph showing groundwater levels from 2010 to 2014. <br /> Chair Jacobs asked what this shows. <br /> Tom Davis said 2010 and 2011 were wetter years, but there is no way to know whether <br /> this is the norm or the drier years are the norm. He said this will be determined with more data <br /> over time. <br /> He reviewed the groundwater level graphs showing the re-charge months of winter and <br /> early spring and the lower level months of summer. He noted that the 2014 lines of the graph <br /> were higher than the mean. He said the groundwater level is the same term as the <br /> groundwater table. <br /> Commissioner Gordon asked what this data means in absolute terms of adequate <br /> quantity. <br /> Tom Davis said this cannot be looked at in absolute terms, only relative to previous <br /> levels. <br /> Commissioner Gordon said she is trying to figure out the big picture and what this <br /> information means as a practical matter. <br />