**Client: Field ID:**

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<td colspan="10"><em><strong><span class="smallcaps">Using a totalizing
flowmeter to measure the volume of water used</span></strong></em></td>
</tr>
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<td colspan="10">Read the flow meter before and after each irrigation.
The difference between the two readings is the volume of water that was
applied measured in <u>acre-feet</u> or <u>acre-inch</u>. Divide the
volume by field acreage to find the Gross Irrigation Depth and then
complete the previous page.</td>
</tr>
<tr class="odd">
<td><p><strong>Final Flowmeter reading</strong></p>
<p><em>(Acre-in)</em></p></td>
<td><blockquote>
<p>Subtract</p>
</blockquote></td>
<td><strong>Initial Flowmeter reading</strong> <em>(Acre-in)</em></td>
<td><blockquote>
<p>Equals</p>
</blockquote></td>
<td><p><strong>Water Volume</strong></p>
<p><em>(Acre-in)</em></p></td>
<td><blockquote>
<p>Divide by</p>
</blockquote></td>
<td><p><strong>Field Area</strong></p>
<p>(acres)</p></td>
<td><blockquote>
<p>Equals</p>
</blockquote></td>
<td><p><strong>Gross Irrigation Depth</strong></p>
<p>(inches)</p></td>
<td><em>If t flowmeter reads acre-ft instead of acre- inch then multiply
the final Gross Irrigation Depth by 12 to convert to inches</em></td>
</tr>
<tr class="even">
<td><em>{Example}</em> <strong>2504</strong></td>
<td><strong>-</strong></td>
<td><strong>2367</strong></td>
<td><strong>=</strong></td>
<td><strong>137</strong></td>
<td><strong>÷</strong></td>
<td><strong>32</strong></td>
<td><strong>=</strong></td>
<td><strong>4.28</strong></td>
<td></td>
</tr>
<tr class="odd">
<td></td>
<td><strong>-</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td><strong>÷</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td></td>
</tr>
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<td></td>
<td><strong>-</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td><strong>÷</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td></td>
<td><strong>-</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td><strong>÷</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td><strong>-</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td><strong>÷</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td></td>
<td><strong>-</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td><strong>÷</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td><strong>-</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td><strong>÷</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td></td>
<td><strong>-</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td><strong>÷</strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>

<table>
<colgroup>
<col style="width: 0%" />
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<col style="width: 9%" />
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<col style="width: 3%" />
<col style="width: 11%" />
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<td colspan="10"><em><strong><span class="smallcaps">measuring the flow
rate of water used</span></strong></em></td>
</tr>
<tr class="even">
<td colspan="10">Record the flow rate, duration of irrigation, and area
of the field irrigated. The flow rate in gpm or cfs can be entered in
the appropriate column.</td>
</tr>
<tr class="odd">
<td></td>
<td><strong>Flow rate</strong> <em>(gpm)</em></td>
<td><p><strong>Divide by</strong></p>
<p><strong>Conversion factor</strong></p></td>
<td><strong>Flow rate</strong> <em>(cfs)</em></td>
<td><blockquote>
<p>Multiply by</p>
</blockquote></td>
<td><p><strong>Duration of irrigation</strong></p>
<p>(hr)</p></td>
<td><blockquote>
<p>Divide by</p>
</blockquote></td>
<td><p><strong>Field Area</strong></p>
<p>(acres)</p></td>
<td><blockquote>
<p>Equals</p>
</blockquote></td>
<td><strong>Gross Irrigation Depth</strong> (inches)</td>
</tr>
<tr class="even">
<td></td>
<td><em>{Example}</em> <strong>820</strong></td>
<td><span class="smallcaps"><strong>÷</strong> 449</span></td>
<td><strong>1.83</strong></td>
<td><strong><span class="smallcaps">x</span></strong></td>
<td><strong>36</strong></td>
<td><strong>÷</strong></td>
<td><strong>28</strong></td>
<td><strong>=</strong></td>
<td><strong>2.35</strong></td>
</tr>
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<td></td>
<td></td>
<td><span class="smallcaps"><strong>÷</strong> 449</span></td>
<td></td>
<td><strong><span class="smallcaps">x</span></strong></td>
<td></td>
<td><strong><span class="smallcaps">÷</span></strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td><span class="smallcaps"><strong>÷</strong> 449</span></td>
<td></td>
<td><strong><span class="smallcaps">x</span></strong></td>
<td></td>
<td><strong><span class="smallcaps">÷</span></strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
</tr>
<tr class="odd">
<td></td>
<td></td>
<td><span class="smallcaps"><strong>÷</strong> 449</span></td>
<td></td>
<td><strong><span class="smallcaps">x</span></strong></td>
<td></td>
<td><strong><span class="smallcaps">÷</span></strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td><span class="smallcaps"><strong>÷</strong> 449</span></td>
<td></td>
<td><strong><span class="smallcaps">x</span></strong></td>
<td></td>
<td><strong><span class="smallcaps">÷</span></strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
</tr>
<tr class="odd">
<td></td>
<td></td>
<td><span class="smallcaps"><strong>÷</strong> 449</span></td>
<td></td>
<td><strong><span class="smallcaps">x</span></strong></td>
<td></td>
<td><strong><span class="smallcaps">÷</span></strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td><span class="smallcaps"><strong>÷</strong> 449</span></td>
<td></td>
<td><strong><span class="smallcaps">x</span></strong></td>
<td></td>
<td><strong><span class="smallcaps">÷</span></strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
</tr>
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<td></td>
<td></td>
<td><span class="smallcaps"><strong>÷</strong> 449</span></td>
<td></td>
<td><strong><span class="smallcaps">x</span></strong></td>
<td></td>
<td><strong><span class="smallcaps">÷</span></strong></td>
<td></td>
<td><strong>=</strong></td>
<td></td>
</tr>
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