Transcription
When do downstreamprocesses matter?Robert R. Christian, Dorothea V. Ames andStanley R. RiggsNC Land of Water & East Carolina UniversityDownstream dynamics affecting upstream conditions of water level:examples from Bertie CountyRobert R. Christian, Dorothea V. Ames and Stanley R. RiggsNC Land of Water & East Carolina University
When do downstreamprocesses matter?Robert R. Christian, Dorothea V. Ames andStanley R. RiggsNC Land of Water & East Carolina University
Caveats Preliminary results – with little analysis Done by a semi-retired ecologist – not an active engineer Focus on high flows and flooding – not low flows Focus on Cashie and ChowanRivers – Not Roanoke yet Willingness to share data andideas!!
meline of 30 largest crestevents at School Rd on theCashie Number of crest events567
Windsor
Oregon Inlet
ROXOBELCR’HWY11HWY308CONNARISTASWAMPWHITE OAKSWAMPWINDSORBATCHELOR BAYHOGGARDS MILLRUNHWY 13SH RdSEGMENT 1CRFEETHWY17BUSROANOKE RIVERHWY 4523SEGMENTWater-level Stations HWY17BPROQUISTCREEKCASHIE RIVERESTUARYSchool Rd456King St7Bowling Farm89
Stage Height4.5Stage Height in Feet43.53Bowling Farm2.5King chool Rd6/176/18
King St Stage Ht (blue) and absolute difference at intervals of 6 hr 10 min(red) (June 25 - July 4, 2014)21.81.6Stage 6/296/307/17/27/37/47/5
Hurricane Matthew at King St, Windsor: stage ht (blue) and absolute difference at 6.17hr 13-2ht (ft)diff10/1410/1510/1610/1710/18
Temperature (F)Water Level in FeetBowling Farms on lower Cashie River(June 19 to August 8, 2018)
Missing dataCashie River at Windsor
Period of record and water level range time of June and August 2018Period of recordHighwaterHigh waterLow waterLow waterDifference(2018)ftdateftdateftBowling -8/75.07/24/20181.77/9/20183.3Bal Gra6/19-8/84.17/24/20180.97/9/20183.2Salmon 9-7/18:7/25-8/82.8 7/28/20180.17/10/20182.7School Road6/19-8/89.28/1/20182.57/6-21/20186.7Location
ColerainChowanRiverLewistonWoodvilleSalmon CreekWindsorBatchlor BayHamiltonCashie RiverPRELIMINARY SUMMARYWilliamstonDownstream processes affectingflow RoanokeandRiver waterPlymouthlevel do matter.They may be as or more important thanupstream processes at times.
School Rd9/14/2018HURRICANE FLORENCELANDFALL&KING ST FIRST PEAK OFMINOR FLOODING
NC FIMAN results at King St (Sep 11 to Oct 11, 2018)9/14/2018HURRICANE FLORENCELANDFALL&KING ST FIRST PEAK OFMINOR FLOODING
Robert R. Christian, Dorothea V. Ames and Stanley R. Riggs NC Land of Water & East Carolina University Downstream dynamics affecting upstream conditions of water level: examples from Bertie County Robert R. Christian, Dorothea V. Ames and Stanley R. Riggs NC Land
