Imports data from NWIS web service. This function gets the data from here: https://waterservices.usgs.gov/
Arguments
- siteNumbers
character USGS site number. This is usually an 8 digit number. Multiple sites can be requested with a character vector.
- parameterCd
character of USGS parameter code(s). This is usually an 5 digit number.
- startDate
character starting date for data retrieval in the form YYYY-MM-DD. Default is "" which indicates retrieval for the earliest possible record. Date arguments are always specified in local time.
- endDate
character ending date for data retrieval in the form YYYY-MM-DD. Default is "" which indicates retrieval for the latest possible record. Date arguments are always specified in local time.
- statCd
character USGS statistic code. This is usually 5 digits. Daily mean (00003) is the default.
Value
A data frame with the following columns:
| Name | Type | Description |
| agency | character | The NWIS code for the agency reporting the data |
| site | character | The USGS site number |
| Date | Date | The date of the value |
| code | character | Any codes that qualify the corresponding value |
| value | numeric | The numeric value for the parameter |
Note that code and value are repeated for the parameters requested. The names are of the form X_D_P_S, where X is literal, D is an option description of the parameter, P is the parameter code, and S is the statistic code (if applicable).
There are also several useful attributes attached to the data frame:
| Name | Type | Description |
| url | character | The url used to generate the data |
| siteInfo | data.frame | A data frame containing information on the requested sites |
| variableInfo | data.frame | A data frame containing information on the requested parameters |
| statisticInfo | data.frame | A data frame containing information on the requested statistics on the data |
| queryTime | POSIXct | The time the data was returned |
Examples
site_id <- "04085427"
startDate <- "2012-01-01"
endDate <- "2012-06-30"
pCode <- "00060"
# \donttest{
rawDailyQ <- readNWISdv(site_id, pCode, startDate, endDate)
rawDailyQAndTempMeanMax <- readNWISdv(site_id, c("00010", "00060"),
startDate, endDate,
statCd = c("00001", "00003")
)
rawDailyQAndTempMeanMax <- renameNWISColumns(rawDailyQAndTempMeanMax)
rawDailyMultiSites <- readNWISdv(c("01491000", "01645000"), c("00010", "00060"),
startDate, endDate,
statCd = c("00001", "00003")
)
# Site with no data:
x <- readNWISdv("10258500", "00060", "2014-09-08", "2014-09-14")
names(attributes(x))
#> [1] "names" "row.names" "url" "siteInfo"
#> [5] "variableInfo" "disclaimer" "statisticInfo" "queryTime"
#> [9] "class"
attr(x, "siteInfo")
#> station_nm site_no agency_cd timeZoneOffset
#> 1 PALM CYN C NR PALM SPRINGS CA 10258500 USGS -08:00
#> timeZoneAbbreviation dec_lat_va dec_lon_va srs siteTypeCd hucCd
#> 1 PST 33.74502 -116.5356 EPSG:4326 ST 18100201
#> stateCd countyCd network
#> 1 06 06065 NWIS
attr(x, "variableInfo")
#> variableCode variableName variableDescription
#> 1 00060 Streamflow, ft³/s Discharge, cubic feet per second
#> valueType param_unit options noDataValue
#> 1 Derived Value ft3/s Mean NA
site <- "05212700"
notActive <- readNWISdv(site, "00060", "2014-01-01", "2014-01-07")
# }