Event mean concentrations for total phosphorus
Caution: This page was updated October 31, 2019
Event mean concentrations for total phosphorus. To see supporting information used to derive this table, link here.
Link to this table
| Land cover/land use | Range (mg/L) | Median from literature review (mg/L) | Mean from literature review (mg/L) | Previous tabled value (mg/L)1 |
|---|---|---|---|---|
| Commercial2, 3 | 0.20 - 0.34 | 0.20 | 0.34 | 0.22 |
| Industrial2, 3 | 0.23 - 0.55 | 0.31 | 0.73 | 0.26 |
| Residential3 | 0.26 - 0.38 | 0.36 | 0.38 | 0.30 |
| High-density/Multi-family residential2, 3 | 0.28 - 0.40 | 0.28 | 0.28 | 0.27 to 0.32 |
| Medium density residential | 0.18 - 0.40 | 0.18 | 0.51 | |
| Low density residential | 0.24 - 0.40 | 0.24 | 0.29 | |
| Freeways/transportation3 | 0.25 - 0.45 | 0.35 | 0.53 | 0.25 |
| Mixed | 0.25 - 0.45 | 0.29 | 0.89 | |
| Parks and recreation2 | 0.04 | |||
| Open space2, 3 | 0.12 - 0.31 | 0.13 | 0.41 | 0.31 |
| Conventional roof | 0.05 - 0.20 | 0.09 | 0.27 | |
| Public/semi public (institutional)2, 3 | 0.18 - 0.40 | 0.26 | 0.42 | 0.18 |
| Cropland2 | 0.32 | |||
| Forest/shrub/grassland12 | 0.04 | |||
| Open water2 | 0.01 | |||
| Wetlands2 | 0.01 to 0.044 | |||
| Farmsteads2 | 0.46 | |||
| Forest | 0.05 - 0.25 | 0.25 | 0.14 |
1We recommend using the median from literature reviews and not the means or previous values.
2 Minnehaha Creek Watershed district, 2003
3 Robert Pitt et al., 2004
4 Average for large wetlands and wetland complexes. Individual wetlands should be monitored to determine source/sink behavior.