Year End Summary for 2018
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MPCA/DNR Cooperative Stream Gaging Year End Summary Report
Station: H39043001 - Maple Creek at Owatonna, CSAH35
Year: 2012
Station Manager: ANLINDLO
Data Manager: DAPLOVNI
Prepared By:
Kory Graafstra (kograafs)
651-539-2107 (Kory.Graafstra@state.mn.us)
Approved By:
Jacob Kolke (jakolke)
651-539-2130 (JACOB.KOLKE@STATE.MN.US)
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Climate Summary
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Data is collected year round at this site.
The ice out date was 03/11/2012.
Snowmelt conditions: N/A. Site is a Limited Flood Warning Gage so ice data is
deleted and flows are not calculated.
The stream was in its banks during the entire year. Unknown as Site is a Limited
Flood Warning Gage so site visits are typically only made twice a year.
There were no periods of low or no flow during the entire year. Unknown as Site
is a Limited Flood Warning Gage so site visits are typically only made twice a
year.
Significant climatic events: 2012 Climate Summary ?013\010SouthCentral
Dept. Dept.
Avg. from Avg. from
Temp. Norm. Prec. Norm.
January 22 8 0.74 -0.21
February 26.4 7.1 2.23 1.38
March 47.2 15.8 1.51 -0.59
April 48.7 3.1 2.78 -0.24
May 62.8 4.4 7.25 3.38
June 70.5 2.2 3.83 -0.91
July 77.7 5.6 1.73 -2.68
August 69.8 -0.1 1.84 -2.65
September 60.9 -0.3 0.82 -2.66
October 45.7 -2.7 1.41 -1.06
November 36.6 3.5 0.53 -1.38
December 22.2 3.7 1.52 0.3
The
first half of 2012 was warmer on average and saw temperatures that were up to
almost sixteen degrees warmer than normal in South Central
Minnesota. The
second half of the monitoring season saw temperatures that varied from average
historical temps with July and November
both being notably warmer than average.
Precipitation was not far off of past averages during the first part of the year
with the
exception of May being notably wetter. Average totals during the
second half of the year were significantly lower than normal.
February?
monthly precipitation totals topped the historical average by more than one inch
over most of southern Minnesota.
For numerous southern Minnesota locales, it
was among the five wettest Februaries in the historical record. A large,
moisture-laden
storm swept across the southern two-thirds of Minnesota on
February 28 through March 1. Rainfall amounts of over one and one-half inches
were reported in many southern Minnesota communities. Large sections southern
Minnesota received three or more inches of rain from May 4
through May 6.
Later in the month, on May 23 and 24, over four inches of rain fell in some
southern and eastern Minnesota communities.
Heavy thunderstorms on June 14
dropped rainfall totals of six to eight inches on portions of Rice, Dakota, and
Goodhue Counties.
The axis of the heaviest rainfall totals aligned nearly
perfectly with the axis of the Cannon River watershed, amplifying the river
flooding.
The state experienced widespread rain on October 23-25.
[source:
State Climatology Office - DNR Division of Ecological and Water Resources]
Flow Data Summary
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Site visits to determine if the logger was tracking stage correctly were done at
a frequency greater than 8 weeks.
The stage record either did not track correctly or was not complete for some
parts of the monitoring season. Unknown. This is a limited flood warning gauge
and thus is not visited frequently enough to validate stage data.
Stage either did not track correctly or was not complete during some or all
moderate to high flow periods this season. Unknown. This is a limited flood
warning gauge and thus is not visited frequently enough to validate stage data.
Incorrect or missing stage values were not accurately adjusted or estimated using
a technique that introduced less than 15% error in total seasonal flow volume.
Unknown. This is a limited flood warning gauge and thus is not visited frequently
enough to validate stage data.
Other stage data collection factors: yes, fuse blown 4/15. Fixed 5/15/2012.
0 flow measurements were taken during the monitoring season.
Some recorded stage values were above the rating by a value greater than 1 foot,
or less than 1 foot with a change in channel control. Unknown. As a limited
floodwarning gauge flows were not computed and thus no rating was developed.
The present rating cannot be accurately extrapolated or modeled to the highest
recorded stage values. Unknown. As a limited floodwarning gauge flow are not
computed and thus no rating was developed.
15% or more of the seasonal flow occurred during the period when the rating was
exceeded. Unknown. As a limited floodwarning gauge flow are not computed and
thus no rating was developed.
Site visits to determine if the physical characteristics of the control changed
during the monitoring season were done at a frequency of greater than 5 weeks.
This is a limited flood warning gauge is and is typically only visisted twice per
year.
No change in the physical characteristics of the control occurred during the
monitoring season. Unknown, as a limited flood warning gauge site visits are not
made frequently enough to validate stage data.
Precipitation Data Summary
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The precipitation record either did not track correctly or was not complete for
some parts of the monitoring season.
The overall precip total for the year does not compare well to an adjacent
station. Unknown. This is a limited flood warning gauge and thus is not visited
frequently enough to validate precip totals.
Less than three field visits were made to check the rain gage for obstructions
during the monitoring season. This is a limited flood warning gauge is and is
typically only visisted twice per year.
There was no visual evidence or an indication from analysis of the precipitation
data that the rain gage was plugged at any time during the monitoring season.
There were vertical obstructions near the rain gage that may have compromised
recorded rainfall values. 50' trees approximately 20' north. 40' power pole
approximately 50' to the east.
The rain gage was not calibrated within the last three years.
Water Quality Data Summary
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No water quality samples were collected at this site during the monitoring
season.
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Data Quality for Calendar Year 2012
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Flow = Unknown Archived Daily Value (QQC=33)
Precip = Unknown Archived Daily Value (PQC=33)
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