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<td colspan="12"><strong>(IWM – 21) Soils INTAKE Guide</strong></td>
</tr>
<tr class="even">
<td rowspan="3"><p><strong>Acre-Inches</strong></p>
<p><strong>applied</strong></p></td>
<td colspan="11"><strong>Soils Intake Family</strong></td>
</tr>
<tr class="odd">
<td><strong>0.1</strong></td>
<td colspan="2"><strong>0.3</strong></td>
<td><strong>0.5</strong></td>
<td><strong>0.75</strong></td>
<td><strong>1.0</strong></td>
<td colspan="2"><strong>1.25</strong></td>
<td><strong>1.5</strong></td>
<td><strong>1.75</strong></td>
<td><strong>2.0</strong></td>
</tr>
<tr class="even">
<td colspan="11"><strong>Approximate <u>time</u> for the applied depth
to infiltrate <em>(Hours)</em></strong></td>
</tr>
<tr class="odd">
<td><strong>1</strong></td>
<td><strong>2.8</strong></td>
<td colspan="2"><strong>1.0</strong></td>
<td><strong>0.63</strong></td>
<td><strong>0.48</strong></td>
<td><strong>0.33</strong></td>
<td colspan="2"><strong>0.28</strong></td>
<td><strong>0.23</strong></td>
<td><strong>0.2</strong></td>
<td><strong>0.18</strong></td>
</tr>
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<td><strong>2</strong></td>
<td><strong>10.5</strong></td>
<td colspan="2"><strong>3.5</strong></td>
<td><strong>2.0</strong></td>
<td><strong>1.5</strong></td>
<td><strong>1.0</strong></td>
<td colspan="2"><strong>0.8</strong></td>
<td><strong>0.7</strong></td>
<td><strong>0.6</strong></td>
<td><strong>0.52</strong></td>
</tr>
<tr class="odd">
<td><strong>3</strong></td>
<td><strong>22.3</strong></td>
<td colspan="2"><strong>6.8</strong></td>
<td><strong>3.8</strong></td>
<td><strong>2.8</strong></td>
<td><strong>1.8</strong></td>
<td colspan="2"><strong>1.5</strong></td>
<td><strong>1.2</strong></td>
<td><strong>1.1</strong></td>
<td><strong>0.9</strong></td>
</tr>
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<td><strong>4</strong></td>
<td><strong>34.0</strong></td>
<td colspan="2"><strong>10.0</strong></td>
<td><strong>5.5</strong></td>
<td><strong>4.1</strong></td>
<td><strong>2.6</strong></td>
<td colspan="2"><strong>2.2</strong></td>
<td><strong>1.8</strong></td>
<td><strong>1.6</strong></td>
<td><strong>1.33</strong></td>
</tr>
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<td><strong>5</strong></td>
<td><strong>49.0</strong></td>
<td colspan="2"><strong>14.0</strong></td>
<td><strong>7.6</strong></td>
<td><strong>5.6</strong></td>
<td><strong>3.6</strong></td>
<td colspan="2"><strong>3.0</strong></td>
<td><strong>2.4</strong></td>
<td><strong>2.2</strong></td>
<td><strong>1.78</strong></td>
</tr>
<tr class="even">
<td colspan="3"><p><strong><u>Acre-Inches applied:</u></strong>
<strong>By knowing the:</strong></p>
<ul>
<li><p><strong>Irrigation flow rate (Q = cfs) (cubic feet per
second)</strong></p></li>
<li><p><strong>Irrigation time set (T = hours)</strong></p></li>
<li><p><strong>And area irrigated (A = acres)</strong></p></li>
</ul>
<p><strong>You can calculate the acre-inches applied (D = QT/A). Where D
is equal to the depth of application in inches.</strong></p></td>
<td colspan="5"><strong><u>Soils Intake Family:</u> The intake family
number of a soil relates the time required to infiltrate a given
quantity of water in a specific soil type. Since the intake rate of the
soil decreases as more water is applied, the family designation (e.g.,
0.1, 05, 1.0, 1.5,…) reflect the final intake rate of the
soil.</strong></td>
<td colspan="4"><strong><u>Time (Hours):</u> This is the total hours
required (i.e., Opportunity Time) for the given Irrigation application
amount to infiltrate into the soil for a specific Intake Family. The
times shown in the table do not reflect the total time of the irrigation
set.</strong></td>
</tr>
<tr class="odd">
<td colspan="12"><strong><u>NOTE:</u> The intake rate of the soil under
irrigation is affected by many factors such as: Soil Texture, Soil
Structure, Compaction, Organic Matter, Stratified Soils, Salts in the
soil, Water Quality, Sediments in the irrigation water, etc. Therefore,
the above times can vary for a given application depth and intake family
number.</strong></td>
</tr>
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</table>