| description:
|
Nonpoint Source (NPS) Rankings for waterbodies reflect an analysis of the waterbodies' potential to respond to best management pactices and are used in the ranking of project proposals for the Targeted Runoff and Stormwater Management Grant Programs. Rank/Description: (a) High Stream - The stream is likely to respond to BMPs and has one or more of the following a) endangered or threatened species; b) fish population, diversity less than optimal; c) recurring fishkills, d) dissolved oxygen violations, ammonia standard violations, high nitrate levels, toxicity due to pesticides or other NPS toxicants, high levels of suspended solids or an HBI or Family Biotic Index rated poor or very poor. There might be a high rate of streambed sedimentation or accelerated negative physical changes to stream morphology occurring; There is there a predominance of undesirable vegetation (algae or macrophytes) (b) Medium Stream - The stream may respond to nonpoint source controls and is a threatened ORW or ERW or is considered threatened based upon data. (c) Low Stream - The lake is not sensitive to phosphorus or sediment and will not likely benefit from BMP implementation. The stream is not threatened. (d) High Lake - The lake is sensitive to phosphorus and sediment and is likely to response to BMPs. (e) Medium Lake - The lake is moderately sensitive to phosphorus or turbidity but does not have any known sensitive species or is not an ORW/ERW. (f) Low Lake - A lake receives a low ranking if it is not sensitive to phosphorus and would not benefit from NPS BMPs. (g) Not Ranked - This waterbody is not yet assessed for nonpoint source ranking. For more information visit the Nonpoint website (https://dnr.wi.gov/topic/nonpoint/). |