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Hubbard Brook Experimental Forest: Daily Streamflow by Watershed, 1956 - present

General Information
Data Package:
Local Identifier:knb-lter-hbr.2.10
Title:Hubbard Brook Experimental Forest: Daily Streamflow by Watershed, 1956 - present
Alternate Identifier:knb-lter-hbr.2
Alternate Identifier:DOI PLACE HOLDER
Abstract:

Streamflow at 9 watersheds within the Hubbard Brook Experimental Forest has been measured continuously from as early as 1955. Streams are gaged with V-notch weirs at the outlet of each watershed. Height of water behind the weir increases with increased streamflow and is recorded by means of a float attached mechanically to a pen on a spring-wound strip-chart recorder. Gage height is converted to streamflow rate by calibration factors and then integrated to generate daily streamflow. Streamflow rate is measured as volume per unit time(L/s) and is proportional to the watershed area.

Beginning January 1, 2013, instantaneous streamflow data (and derived daily streamflow) are measured by electronic sensors, and data are provisional as the transition from chart to digital data collection is still under evaluation. Data may be updated before they are finalized. Please contact the dataset creator prior to data use/publication. Daily streamflow data are derived from the instantaneous streamflow record, and additional information (quality control flagging and gapfilling) can be found in that record https://portal.lternet.edu/nis/mapbrowse?scope=knb-lter-hbr&identifier=1

In 2016, a new, more comprehensive gapfilling method was used, wherein data removed by QC flagging are calculated with a regression ensemble, using data from all remaining weirs that have data passing QC tests. The median of the predicted 5-minute discharge rates based on regression with the remaining weirs was used as the robust prediction of discharge for a data gap. Additionally, the difference between the prediction and the actual values at the beginning and end of a gap were set to zero to “snap” the prediction to the adjacent measured values.

These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.

Short Name:Streamflow Daily by Watershed
Publication Date:2019-05-14
Language:English

Time Period
Begin:
1956-01-01
End:
2017-10-08

People and Organizations
Contact:Information Manager (Hubbard Brook Ecosystem Study) [  email ]
Creator:USDA Forest Service, Northern Research Station

Data Entities
Data Table Name:
HBEF_DailyStreamflow_1956-2017_longform.csv
Description:
HBEF Daily streamflow (mm)
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-hbr/2/10/bc9b38cd59d18ee687895dadb3e41ad7
Name:HBEF_DailyStreamflow_1956-2017_longform.csv
Description:HBEF Daily streamflow (mm)
Number of Records:203067
Number of Columns:3

Table Structure
Object Name:HBEF_DailyStreamflow_1956-2017_longform.csv
Size:3984674 byte
Authentication:4bcd5e2f55e585bac6ee28cf576a6f7e Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\r\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 DATEWatershedStreamflow
Column Name:DATE  
Watershed  
Streamflow  
Definition:DateWatershed identification numberStreamflow in mm per day
Storage Type:date  
string  
float  
Measurement Type:dateTimenominalratio
Measurement Values Domain:
FormatYYYY-MM-DD
Precision
DefinitionNumber 1-9
UnitmillimeterPerDay
Typereal
Missing Value Code:      
Accuracy Report:      
Accuracy Assessment:      
Coverage:      
Methods:      

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study.

While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
Hubbard Brook Ecosystem Studygage, gauge, HBR, Hubbard Brook LTER, weir
LTER Network Controlled Vocabularydischarge, ecosystems, forests, hydrology, stream discharge, streamflow, streams, water, watersheds
LTER Network Core Research Areasdisturbance

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package
Description:

CALCULATIONS

HBEF daily stream flow for each of the nine gaged water sheds is published in units of mm/day. This measurement is a depth (mm) of water over the entire watershed. Conversion factors and the formulas for converting from ft3/sec to mm/day and from mm/day to ft3/sec are provided.

WS1: 29.20 acres = 1,271,952.0 ft2

WS2: 38.58 acres = 1,680,544.8 ft2

WS3: 104.71 acres = 4,561,167.6 ft2

WS4: 89.215 acres = 3,886,205.4 ft2

WS5: 54.05 acres = 2,354,418.0 ft2

WS6: 32.69 acres = 1,423,976.4 ft2

WS7: 191.18 acres = 8,327,800.8 ft2

WS8: 146.70 acres = 6,390,252.0 ft2

WS9: 168.90 acres = 7,357,284.0 ft2

Converting ft3/sec to mm/day (mm is depth over entire watershed area):

WS1: 1 ft3/sec * 1/1,271,952.0 ft2 * 86,400 sec/day *12inches/ft * 25.4 mm/inch = 20.70 mm/day

WS2: 1 ft3/sec * 1/1,680,544.8 ft2 * 86,400 sec/day *12inches/ft * 25.4 mm/inch = 15.67 mm/day

WS3: 1 ft3/sec * 1/4,561,167.6 ft2 * 86,400 sec/day *12inches/ft * 25.4 mm/inch = 5.77 mm/day

WS4: 1 ft3/sec * 1/3,886,205.4 ft2 * 86,400 sec/day *12inches/ft * 25.4 mm/inch = 6.78 mm/day

WS5: 1 ft3/sec * 1/2,354,418.0 ft2 * 86,400 sec/day *12inches/ft * 25.4 mm/inch = 11.19 mm/day

WS6: 1 ft3/sec * 1/1,423,976.4 ft2 * 86,400 sec/day *12inches/ft * 25.4 mm/inch = 18.49 mm/day

WS7: 1 ft3/sec * 1/8,327,800.8 ft2 * 86,400 sec/day *12inches/ft * 25.4 mm/inch = 3.16 mm/day

WS8: 1 ft3/sec * 1/6,390,252.0 ft2 * 86,400 sec/day *12inches/ft * 25.4 mm/inch = 4.12 mm/day

WS9: 1 ft3/sec * 1/7,357,284.0 ft2 * 86,400 sec/day *12inches/ft * 25.4 mm/inch = 3.58 mm/day

Converting mm/day to ft3/sec:

WS1: 1 mm/day * 1,271,952.0 ft2 * day/86,400 sec * ft/12inches * inch/25.4 mm = .0483 ft3/sec

WS2: 1 mm/day * 1,680,544.8 ft2 * day/86,400 sec * ft/12inches * inch/25.4 mm = .0638 ft3/sec

WS3: 1 mm/day * 4,561,167.6 ft2 * day/86,400 sec * ft/12inches * inch/25.4 mm = .1732 ft3/sec

WS4: 1 mm/day * 3,886,205.4 ft2 * day/86,400 sec * ft/12inches * inch/25.4 mm = .1476 ft3/sec

WS5: 1 mm/day * 2,354,418.0 ft2 * day/86,400 sec * ft/12inches * inch/25.4 mm = .0894 ft3/sec

WS6: 1 mm/day * 1,423,976.4 ft2 * day/86,400 sec * ft/12inches * inch/25.4 mm = .0541 ft3/sec

WS7: 1 mm/day * 8,327,800.8 ft2 * day/86,400 sec * ft/12inches * inch/25.4 mm = .3162 ft3/sec

WS8: 1 mm/day * 6,390,252.0 ft2 * day/86,400 sec * ft/12inches * inch/25.4 mm = .2427 ft3/sec

WS9: 1 mm/day * 7,357,284.0 ft2 * day/86,400 sec * ft/12inches * inch/25.4 mm = .2794 ft3/sec

People and Organizations

Publishers:
Organization:Hubbard Brook Ecosystem Study
Address:
234 Mirror Lake Road,
North Woodstock, NH 03262 United States
Creators:
Individual: USDA Forest Service, Northern Research Station
Contacts:
Organization:Hubbard Brook Ecosystem Study
Position:Information Manager
Address:
234 Mirror Lake Road,
North Woodstock, NH 03262 United States
Email Address:
hbr-im@lternet.edu
Web Address:
https://hubbardbrook.org

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period
Begin:
1956-01-01
End:
2017-10-08
Geographic Region:
Description:Hubbard Brook Experimental Forest Watershed 1
Bounding Coordinates:
Northern:  43.959286Southern:  43.952053
Western:  -71.731339Eastern:  -71.726311
Geographic Region:
Description:Hubbard Brook Experimental Forest Watershed 2
Bounding Coordinates:
Northern:  43.960224Southern:  43.939945
Western:  -71.728706Eastern:  -71.687683
Geographic Region:
Description:Hubbard Brook Experimental Forest Watershed 3
Bounding Coordinates:
Northern:  43.962128Southern:  43.939945
Western:  -71.725502Eastern:  -71.687683
Geographic Region:
Description:Hubbard Brook Experimental Forest Watershed 4
Bounding Coordinates:
Northern:  43.95837Southern:  43.939945
Western:  -71.737183Eastern:  -71.687683
Geographic Region:
Description:Hubbard Brook Experimental Forest Watershed 5
Bounding Coordinates:
Northern:  43.9571Southern:  43.939945
Western:  -71.739853Eastern:  -71.687683
Geographic Region:
Description:Hubbard Brook Experimental Forest Watershed 6
Bounding Coordinates:
Northern:  43.957001Southern:  43.949928
Western:  -71.743462Eastern:  -71.735649
Geographic Region:
Description:Hubbard Brook Experimental Forest Watershed 7
Bounding Coordinates:
Northern:  43.948246Southern:  43.916016
Western:  -71.77346Eastern:  -71.687683
Geographic Region:
Description:Hubbard Brook Experimental Forest Watershed 8
Bounding Coordinates:
Northern:  43.948246Southern:  43.917942
Western:  -71.76255Eastern:  -71.687683
Geographic Region:
Description:Hubbard Brook Experimental Forest Watershed 9
Bounding Coordinates:
Northern:  43.948246Southern:  43.915962
Western:  -71.758507Eastern:  -71.687683

Project

Other Metadata

Additional Metadata

additionalMetadata
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        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |        \___attribute 'abbreviation' = 'mm/day'
        |     |     |        \___attribute 'id' = 'millimeterPerDay'
        |     |     |        \___attribute 'name' = 'millimeterPerDay'
        |     |     |        \___attribute 'unitType' = 'NA'
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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