uid=PIE,o=EDI,dc=edirepository,dc=org all public read WAT-YSI-Urban-2009 Year 2009, 15 minute measurements of stage in a small headwater stream draining a highly suburban catchment (72% residential), Saw Mill Brook, Burlington, MA. Wilfred Wollheim University of New Hampshire (603) 862-5022 Wil.Wollheim@unh.edu http://orcid.org/0000-0002-5009-3212 Plum Island Ecosystems LTER http://pie-lter.ecosystems.mbl.edu/ Plum Island Ecosystems LTER http://pie-lter.ecosystems.mbl.edu/ 2010 English
Year 2009, continuous measurements, every 15 minutes, were made of depth and stream temperature in a small headwater stream, Saw Mill Brook, Burlington, MA, draining a highly suburban catchment (72% residential). Discharge is determined from stage using discharge vs stage regressions.
Disturbance Core Areas disturbance discharge Saw Mill Brook suburban water stage. water temperature PIE LTER LTER Controlled Vocabulary
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https://pie-lter.ecosystems.mbl.edu/content/year-2009-15-minute-measurements-stage-small-headwater-stream-draining-highly-suburban-catch Watershed water collection and stream characterization site for Saw Mill Brook (urban landuse), Burlington, MA -71.184997558594 -71.184997558594 42.523601531982 42.523601531982 2009-01-01 2009-10-21   Periodic with improvement of rating curve, particularly as more high discharge events are incorporated. Version 01created January 2010 Version 02: February 12, 2014, data and metadata updated to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Sep2013.xlsm 9/30/13 02:57 PM for QA/QC to EML 2.1.0 Plum Island Ecosystems LTER http://pie-lter.ecosystems.mbl.edu/ Plum Island Ecosystems LTER http://pie-lter.ecosystems.mbl.edu/ Plum Island Ecosystems
This file consists of depth data collected using a HOBO datalogger deployed in a stilling well in the stream channel. HOBO Datalogger: Depth and water temperature are recorded by the HOBO data logger. Depths are corrected for barometric pressure changes using readings in an additional HOBO datalogger deployed at Marshview Farm. The HOBO is deployed in a PVC tube, which was attached to ree-bar driven into the stream bed. The PVC tube has holes drilled to allow adequate water circulation. ADDITIONAL RESEARCH LOCATION COORDINATES: In addition to the decimal degree coordinates given above, locations are also given here in Massachusetts State Plane coordinates. The stream is called SawMill Br. and is located in Burlington MA. Small amounts of forest remain (~14% in 1999), much of which is along the stream channel near the gaging site. STATION STATE X STATE Y YSI-SB 225840 919310 NOTES AND COMMENTS: Velocity measurements were made using a Marsh McBirney current meter. Starting in 2010, discharge measurements are being made with a Sontek FlowTracker. Discharge estimates in Saw Mill are based on a power rating curve that contains measurements up to a stage depth of 1.2 meters, which is above bankfull stage. Rating curve has an R2 of 0.88 using 40 measurements between 2001 and 2009. The rating curve has not noticeably changed over the period. Prior to 2007, stage was measured with various other instruments (YSI, Sigma depth sonde, HOBO). All files in this series (2001-2009) are now standardized to HOBO depth. The rating curve is based on the standardized HOBO depth's (and actual HOBO depths since 2007). CALCULATIONS: Discharge rating curve : Discharge (l/s) = 896.47*depth^5.7352 where depth is Adj_HOBO_Depth Adj_Hobo_Depth is a corrected HOBO depth that represents the true hobo depth (StandardizedHoboDepths in previous years). We started having problems with sand accumulation in the stilling well, and following downloads, redeployment of the HOBO caused it to sit on top of the sand. Manual measurements of water depth were used to make the correction. Starting in 10/21/09, we plan on preventing this from happening any longer. The following corrections were applied: 1. 2006-07-26 - 2007-04-03: 0 m 2. 2007-04-03 - 2007-04-18: 0.035 m 3. 2007-04-18 - 2007-05-23: 0.055 m 4. 2007-05-23 - 2008-06-06: 0.072 m 3. 2008-06-06 - 2009-01-14: 0.0446 m 4. 2009-01-14 - 2009-10-21: 0.0957 m 5. 2009-10-21 - yyyy-mm-dd: 0 Adj_HOBO_Depth is equivalent to StandardizedHoboDepths in previous years. Also, at times depth and discharge may be periodically erroneous due to leaf pack accumulation at a riffle downstream causing backup. We remove this whenever we visit the site. Generally we believe the depth error is on the order of 2-4 centemeters. The depth data have not been corrected for errors associated with temporary debris dams. In 2009, leaf pack was removed on the following dates: 9/28/09 (2 cm change, not adjusted in our data), 10/21/09, 11/14/09, 12/12/09.
WAT-YSI-Urban-2009_csv Year 2009, 15 minute measurements of stage in a small headwater stream draining a highly suburban catchment (72% residential), Saw Mill Brook, Burlington, MA. WAT-YSI-Urban-2009_0.csv 1370452 e2a6c034f259e6fe9767445dd51fec1d 511148729685a90d9693baf81494b9a73a67694f 1 0 column , https://pie-lter.ecosystems.mbl.edu/sites/default/files/data/WAT-YSI-Urban-2009_0.csv Date Date date (yyyy-mm-dd) date yyyy-mm-dd NA missing Time Time time (hh:mm)) date hh:mm NA missing Temp Temp water temperature (oC) celsius real NA missing HOBO_Depth HOBO_Depth stage height measured by HOBO (m) meter real NA missing Adj_HOBO_Depth Adj_HOBO_Depth HOBO depth + CorrectionFactor (see methods) meter real NA missing Device_Depth Device_Depth depth measurement device used to determine discharge string HOBO HOBO depth sonde deployed in permanent stilling well NA missing Discharge Discharge discharge literPerSecond real NA missing WAT-YSI-Urban-2009_xls Excel metadata and data file associated with the csv data source file. Excel file after downloading is to be used for adding/editing new metadata and data. WAT-YSI-Urban-2009.xls 4754432 9f8acfcb7cf3838c74de0ca49731ac81 a122e8d9bd1af1521f34239ebfd82353434c9a24 application/vnd.ms-excel https://pie-lter.ecosystems.mbl.edu/sites/default/files/data/WAT-YSI-Urban-2009.xls document
A common unit of temperature SI unit of length liters per second