Water quality data collection (Turbidity, Dissolved Oxygen, Specific Conductance, pH, and Chlorophyll) will be discontinued on Sept. 30, 2025, due to loss of project funding. If you have an interest in continuance and/or support of data collection at this site, please contact the Central Midwest Water Science Center, Gary Johnson (email: gjohnson@usgs.gov).
| USGS Parameter Group | Data Types | Start Date | End Date |
|---|---|---|---|
| Biological | Daily Values, Unit Values, Water-quality | 1974-11-04 | 2024-12-25 |
| Information | Water-quality | 1951-04-11 | 2011-04-25 |
| Inorganics, Major, Metals | Water-quality | 1951-04-11 | 2011-04-25 |
| Inorganics, Major, Non-metals | Daily Values, Unit Values, Water-quality | 1951-04-11 | 2024-12-25 |
| Inorganics, Minor, Non-metals | Water-quality | 1975-03-17 | 2011-04-25 |
| Inorganics, Minor, metals | Water-quality | 1951-04-11 | 2011-04-25 |
| Microbiological | Water-quality | 1974-11-04 | 1987-09-01 |
| Nutrient | Daily Values, Unit Values, Water-quality | 1951-04-11 | 2024-12-25 |
| Organics, other | Water-quality | 1967-03-20 | 2011-04-25 |
| Organics, pesticide | Water-quality | 1999-07-22 | 2011-04-25 |
| Physical | Daily Values, Unit Values, Water-quality | 1878-01-01 | 2024-12-25 |
| Population/Community | Water-quality | 1974-11-04 | 1981-09-01 |
| Radiochemistry | Water-quality | 1981-02-06 | 1981-07-01 |
| Sediment | Water-quality | 1944-07-01 | 2008-06-18 |
| n/a | Peak Measurements | 1851-06-06 | 2022-04-27 |
| n/a | Site Visits | 1934-06-28 | 2024-12-11 |
| n/a | USGS Annual Water Data Reports Site | 2006-01-01 | 2024-01-01 |
Monitoring location 05474500 is associated with a Stream in Lee County, Iowa. Current conditions of Chlorophylls, Dissolved oxygen, Nitrate plus nitrite, and more are available. Water data back to 1851 are available online.
| Metadata Element | Location Metadata | Metadata Code |
|---|---|---|
|
Agency
|
U.S. Geological Survey | USGS |
|
Site identification number
|
05474500 | n/a |
|
Site name
|
Mississippi River at Keokuk, IA | n/a |
|
Site type
|
Stream
|
ST |
| DMS latitude | 402337 | n/a |
| DMS longitude | 0912227 | n/a |
| Decimal latitude | 40.39365535 | n/a |
| Decimal longitude | -91.374318 | n/a |
|
Latitude-longitude method
|
Interpolated from MAP. | M |
|
Latitude-longitude accuracy
|
Accurate to + or - 5 sec. | F |
|
Latitude-longitude datum
|
North American Datum of 1927 | NAD27 |
| Decimal Latitude-longitude datum | North American Datum of 1983 | NAD83 |
|
District
|
Iowa | 19 |
|
State
|
Iowa | 19 |
|
County
|
Lee County | 111 |
| Country | US | n/a |
| Land net location description | SESW S30 T065N R04W 5 | n/a |
| Name of location map | HAMILTON | n/a |
| Scale of location map | 24000 | n/a |
| Altitude of Gage/land surface | 477.41 feet | n/a |
| Method altitude determined | Level or other surveyed method. | L |
| Altitude accuracy | .01 feet | n/a |
|
Altitude datum
|
National Geodetic Vertical Datum of 1929 | NGVD29 |
|
Subbasin hydrologic unit
|
07080104 | |
|
Drainage basin
|
n/a | |
|
Topographic setting
|
Stream channel
|
C |
| Flags for instruments at site | NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN | n/a |
|
Date of first construction
|
n/a | |
| Date site established or inventoried | 187801 | n/a |
|
Drainage area
|
119000 square miles | n/a |
| Contributing drainage area | n/a | |
| Time Zone abbreviation | CST | n/a |
|
Site honors Daylight Saving Time
|
Y | n/a |
|
Data reliability
|
n/a | |
| Data-other GW files | YNNNNNNN | n/a |
| National aquifer | n/a | |
| Local aquifer | n/a | |
|
Local aquifer type
|
n/a | |
| Well depth | n/a | |
|
Hole depth
|
n/a | |
| Source of depth data | n/a | |
| Project number | 461900100 | n/a |
