Lake Greenfield IA 05-NOD-1402
Adair County S13T75NR32W approx. 1 mile SW Greenfield.
This is a Legacy Assessment. Prior to 2004, assessments were developed under a methodology that pre-dated the Integrated Report guidelines.
Assessment Cycle
1996
Result Period
1992 - 1994
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 05-NOD-00770-L_0
Overall Use Support
Threatened
Aquatic Life Use Support
Not assessed
Fish Consumption
Not assessed
Drinking Water
Threatened
Documentation
Assessment Comments
Basis for Assessment
Used results of sampling for 8 common agricultural herbicides and two metabolites at two locations (inlet and dam) on January 11, 1995, to assess support of the Class C (drinking water) uses as FST due to (1) detection of only one herbicide (atrazine) in water or sediment, (2) relatively low levels of atrazine at dam and inlet (0.25 and 0.18 ug/l) compared to average reportable concentration for the 19 water supply reservoirs in this study (=0.84 ug/l), and (3) the MCL for atrazine was not exceeded.
Monitoring and Methods
Assessment Key Dates
Methods
| 340 | Primary producer surveys (phytoplankton/periphyton/macrophyton) |
| 222 | Non-fixed-station monitoring (conventional during key seasons and flows) |
| 270 | PWS chemical monitoring (ambient water) |
Monitoring Levels
| Biological | 0 |
| Habitat | 0 |
| Physical Chemistry | 3 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 0 |
| BioIntegrity | N/A |