Stream Hydrology
Ditch 58
| Monitoring Location | at Andover Blvd, Ham Lake STORET SiteID = Ditch58_Hwy16 |
| Monitored By | ACD Staff |
| Notes: Ditch 58 is a tributary to Coon Creek. Upstream of the monitoring site, Ditch 58 consists of 20 miles of ditch, including many small tributaries. Its light bulb-shaped watershed is roughly delimited by Lake Netta to the northeast, Crosstown Boulevard to the northwest and southwest, and highway 65 to the southeast. Watershed land uses are dominated by suburban residential and sod fields. The ditch is about 10 feet wide and 2 feet deep at the monitoring site during baseflow.
Ditch 58 water levels fluctuated 2.44 feet throughout 2006. The lowest water occurred during the moderate drought conditions of late summer when water levels were about 0.5 feet lower than other times of the year. The ditch’s most dramatic event of 2006 was a 1.94 foot rise in response to back-to-back 1.81- and 0.44-inch storms in mid-September. Given that the ditch is about 10-12 inches deep during baseflows, this is a relatively large increase in flow. In 2005 few extreme water levels were experienced, with the exception of a roughly two foot increase following a two-day rainfall total of 3.43 inches on October 4-5. Over the entire year water levels ranged 3.07 feet. Although this ditch is small, it is capable of rising quickly in response to significant rain events. For example, on 6/20/2005 it rose 0.68ft in the first four hours of a 1.03 inch storm. On 8/24/2005 it rose 1.21ft in the first four hours of a storm that totaled 1.61 inches. Given that the ditch is about 10-12 inches deep during baseflows, these are relatively large increases in flow. Because the ditch is deeply incised, this ditch is many feet below the tops of its banks even during high water conditions.
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*Note: Not all monitored years are listed. Please refer to mapping utility for complete data. |
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