About the Water Quality Map
click on image to access map
This water quality map shows all sites sampled to date as part of MSD's monitoring program. The map currently includes:
- 92 sites sampled along the Mill Creek and its tributaries in 2011 for chemical and biological data.
- 111 sites sampled along the Little Miami River and its tributaries during 2012 for chemical and biological data.
- Historical chemical data dating back to 1998 at some of the sites.
How to Use the Map
To use the map, click on the image of the map or click on the Access the Web Map link in the right margin. Once the map is launched, you can scroll within it by using your mouse pointer. You can enlarge or reduce the map using the + and – buttons at the upper left. You can change the basemap from an overlay to a 2011 aerial or street map or focus on a particular address or place using the "Find address or place" box.
Each sampling location is identified by a colored ball. The color of the ball corresponds to the condition of the stream at the sampling point (attainment, partial attainment or non-attainment with its applicable Aquatic Life Use standard). See the legend for more information.
To find additional information about each sampling point, click on the colored ball to view an informational box.
click on image to access map
Each information box provides specific details, including:
- A unique Site ID for each sampling location. MC = Mill Creek samples and LM = Little Miami samples.
- Stream Name
- River Mile
- Drainage area (in square miles)
- Location of sampling point
- Aquatic Life Use designation as Exceptional Warmwater Habitat (EWH), Warmwater Habitat (WWH), Modified Warmwater Habitat (MWH) or Limited Resource Waters (LRW) or Primary Headwater Habitat (PHWH) with class subcategories
- Status of whether the sampling location is in "Full," "Partial" or "Non" Attainment with Ohio's Aquatic Life Use standard for the specific Aquatic Life Use designation. This designation is a determination of whether the stream provides suitable habitat for survival and reproduction of desirable fish, shellfish and other aquatic organisms. This status is not applicable to primary headwaters.
- Recreational Use designation as Primary Contact (PC) or Secondary Contact (SC) with class subcategories. Primary contact means there is potential for ingestion or immersion in the water. An example of primary contact use is swimming. Secondary contact means ingestion of or immersion in the water is unlikely. An example of secondary contact use is fishing or boating.
- Status of whether this site is in "Full," "Partial" or "Non" Attainment with Ohio's Recreational Use standard for the specific Recreational Use designation. This is a determination of whether E. coli bacteria concentrations are within allowable limits for recreational purposes (e.g., primary and secondary contact with the water). This status is not applicable to primary headwaters.
- Causes for partial or non-attainment with the Aquatic Life Use standard such as habitat alteration, sedimentation, chemicals, etc.
- Chemical and biological analyses (data tables).