Monday, November 5, 2018

September was second wettest in 136 years for Ohio; October showed wild swings in rainfall

Few other Ohioans can appreciate the vagaries of wet or dry conditions more than can the state’s hunters and anglers.

And though nearly all of Ohio was stressed by too much – in many case, way too much – precipitation in September, the state still saw erratic rainfall that resulted in localized flooding in some areas.

September’s wetness is easier to quantify in large measure because the Ohio Department of Natural Resources’ Division of Geological Survey conducts a monthly wrap-up with what it calls a “water inventory report.”

The agency’s September report says that this past September was the second-wettest for the month for Ohio in 136 years, averaging 6.52 inches – or 3.35 inches above normal.

In fact, eight of the state’s 10 climatic regions – the Geological Survey segments Ohio into 10 climatic zones, or regions – ranked in the top five wettest Septembers on record, the agency says.

Again, however, not all areas experienced an equal amount of bonus rainfall. Scioto County’s Lucasville saw 10 inches of rainfall in September while Williams County’s Edon saw only 0.85 inches of rainfall.

How all of this translated into stream flow - which plagued anglers in more than a few locations during September - also is documented in the Geological Survey Division’s September water inventory report. In Northeast Ohio, the Grand River at Painesville saw its discharge rate (as measured in cubic feet per second) surge to 745 percent of normal.

Meanwhile, the Little Beaver Creek as measured at East Liverpool was 995 cubic feet per second.

Neither of these two streams held a candle to the Stillwater River at Pleasant Hill, however. Here, the discharge rate was an astounding 1,956 percent of normal.

And though Lake Erie’s water level made its seasonal September decline the lake’s that month was still 0.23 feet above where it was in September 2017.

Yet October appears to have demonstrated an extraordinarily fickle nature when it came to precipitation. Though the Geological Survey Division’s 10-climatic-region-based monthly water inventory report for October won’t be available for several weeks, data from the National Weather Service does shows some huge swings in precipitation amounts for Ohio.

Such swings impacted anglers in Northeast Ohio who saw their steelhead streams and late season Lake Erie walleye fishing ventures both hampered. Meanwhile, some deer hunters in southwest Ohio reported very dry woodland conditions.

National Weather Service statistics support both views. In Cleveland for October, 3.78 inches of rain fell, which was 0.71 inches above average for the month, though several communities further to the east saw more rain, such as Mentor and Thompson Township.

Further south and west, Mansfield saw 4.53 inches of rain in October, or 1.59 inches above the monthly average for the city. At the same time, Youngstown saw 3.77 inches of rainfall, or 1.59 inches above normal.

From there, several areas of the state experienced deficits, subtracting from their September abundance.

For example, Toledo during October saw 1.94 inches of rain. That measurement was 0.66 inches below average. Experiencing even greater monthly deficits in October were both Dayton and Cincinnati. Dayton saw 1.53 inches of rain during October, or 1.40 inches below the monthly average while Cincinnati encountering 1.67 inches of rainfall, or 1.63 inches below its average.

Only Columbus appears to have closed in on its October average. Based on National Weather Service data, the city saw 2.60 inches of rain, which was a statistically insignificant 0.01 inches below average.

As for the calendar year, if your weekend fishing trips seemed washed out more often than not, that’s because through September 2018’s rainfall stood at 39.90 inches, which is 9.49 inches above average. These excessive rainfalls ranged anywhere from 15.73 inches above average in the state’s southeast region to 3 inches above normal for the northwest region.


- By Jeffrey L. Frischkorn
JFrischk@Ameritech.net

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