Streamflow Statistic Trends at USGS Streamgages within the Chesapeake Bay Watershed (1940-2018)
This Child Item contains (1) a table of trends in eight annual streamflow statistics for the time periods 1940-1969, 1970-1999, and 2000-2018, and
(2) a .zip file of plots of the eight statistical trends for the three time periods.
The annual streamflow statistics and their trends were computed by Climate Year (CY) for 1-,7- and 30-day minima and by Water Year (WY) for 1-,7- and 30-day maxima, median and mean.
Streamgages from the original dataset (n = 409) were excluded from one or more time periods of analysis because of extensive data gaps that would interrupt trend lines;
therefore, streamgages were indexed into the earliest possible time period relative to their installation date
(for example, a streamgage with an operating start year of 1958 would be included in the analysis for the time periods 1970-1999 and 2000-2018), which resulted in different sample sizes for each period:
1940-1969 (n = 90), 1970-1999 (n = 167), and 2000-2018 (n = 243).
Similarly, multiple streamgages were wholly excluded because of frequent discontinuities in the daily mean streamflow used to derive the annual mean streamflow through all three time periods.
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"010:12"
]
|
| contactPoint |
{
"fn": "Christopher A. Mason",
"@type": "vcard:Contact",
"hasEmail": "mailto:camason@usgs.gov"
}
|
| description | This Child Item contains (1) a table of trends in eight annual streamflow statistics for the time periods 1940-1969, 1970-1999, and 2000-2018, and (2) a .zip file of plots of the eight statistical trends for the three time periods. The annual streamflow statistics and their trends were computed by Climate Year (CY) for 1-,7- and 30-day minima and by Water Year (WY) for 1-,7- and 30-day maxima, median and mean. Streamgages from the original dataset (n = 409) were excluded from one or more time periods of analysis because of extensive data gaps that would interrupt trend lines; therefore, streamgages were indexed into the earliest possible time period relative to their installation date (for example, a streamgage with an operating start year of 1958 would be included in the analysis for the time periods 1970-1999 and 2000-2018), which resulted in different sample sizes for each period: 1940-1969 (n = 90), 1970-1999 (n = 167), and 2000-2018 (n = 243). Similarly, multiple streamgages were wholly excluded because of frequent discontinuities in the daily mean streamflow used to derive the annual mean streamflow through all three time periods. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Digital Data",
"format": "XML",
"accessURL": "https://doi.org/10.5066/P99OOTED",
"mediaType": "application/http",
"description": "Landing page for access to the data"
},
{
"@type": "dcat:Distribution",
"title": "Original Metadata",
"format": "XML",
"mediaType": "text/xml",
"description": "The metadata original format",
"downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.6092890cd34e791692e3e913.xml"
}
]
|
| identifier | http://datainventory.doi.gov/id/dataset/USGS_6092890cd34e791692e3e913 |
| keyword |
[
"Chesapeake Bay Watershed",
"Delaware",
"EGRET",
"Maryland",
"New York",
"Pennsylvania",
"USGS:6092890cd34e791692e3e913",
"United States",
"Virginia",
"Washington DC",
"West Virginia",
"flow",
"stream flow trends",
"time series"
]
|
| modified | 2021-08-12T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
}
|
| spatial | -79.167480469182, 36.208470061656, -74.904785156852, 42.714410712674 |
| theme |
[
"Geospatial"
]
|
| title | Streamflow Statistic Trends at USGS Streamgages within the Chesapeake Bay Watershed (1940-2018) |
