**[1. West Of McNary and West Of Slatt Historical Transfer Levels, CY
1994-2003]{.underline}**

# Table 1 is a summary of WOM and WOS transfers over the past ten years, based on hourly averages of SCADA recordings. The annual maximum values would be somewhat higher if based on 5-minute averages of SCADA recordings.

<table style="width:100%;">
<colgroup>
<col style="width: 24%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 7%" />
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</colgroup>
<tbody>
<tr class="odd">
<td><h1 id="path-transfer-mw"><strong>Path Transfer
[MW]</strong></h1></td>
<td colspan="10"><h1 id="calendar-year"><strong>Calendar
Year</strong></h1></td>
</tr>
<tr class="even">
<td><h1 id="section"></h1></td>
<td><h1 id="section-1"><strong>1994</strong></h1></td>
<td><h1 id="section-2"><strong>1995</strong></h1></td>
<td><h1 id="section-3"><strong>1996</strong></h1></td>
<td><h1 id="section-4"><strong>1997</strong></h1></td>
<td><h1 id="section-5"><strong>1998</strong></h1></td>
<td><h1 id="section-6"><strong>1999</strong></h1></td>
<td><h1 id="section-7"><strong>2000</strong></h1></td>
<td><h1 id="section-8"><strong>2001</strong></h1></td>
<td><h1 id="section-9"><strong>2002</strong></h1></td>
<td><h1 id="section-10"><strong>2003</strong></h1></td>
</tr>
<tr class="odd">
<td><h1 id="wom-maximum"><strong>WOM maximum</strong> </h1></td>
<td><h1 id="section-11">1712</h1></td>
<td><h1 id="section-12">2538</h1></td>
<td><h1 id="section-13">2273</h1></td>
<td><h1 id="section-14">2320</h1></td>
<td><h1 id="section-15">2299</h1></td>
<td><h1 id="section-16">2471</h1></td>
<td><h1 id="section-17">2405</h1></td>
<td><h1 id="section-18">1969</h1></td>
<td><h1 id="section-19">2159</h1></td>
<td><h1 id="section-20">2332</h1></td>
</tr>
<tr class="even">
<td><h1 id="wom-mean"><strong>WOM mean</strong> </h1></td>
<td><h1 id="section-21">658</h1></td>
<td><h1 id="section-22">836</h1></td>
<td><h1 id="section-23">1464</h1></td>
<td><h1 id="section-24">1500</h1></td>
<td><h1 id="section-25">1328</h1></td>
<td><h1 id="section-26">1549</h1></td>
<td><h1 id="section-27">1294</h1></td>
<td><h1 id="section-28">901</h1></td>
<td><h1 id="section-29">1307</h1></td>
<td><h1 id="section-30">1348</h1></td>
</tr>
<tr class="odd">
<td><h1 id="wos-maximum"><strong>WOS maximum</strong> </h1></td>
<td><h1 id="section-31">2270</h1></td>
<td><h1 id="section-32">2576</h1></td>
<td><h1 id="section-33">3515</h1></td>
<td><h1 id="section-34">3387</h1></td>
<td><h1 id="section-35">3459</h1></td>
<td><h1 id="section-36">3452</h1></td>
<td><h1 id="section-37">3305</h1></td>
<td><h1 id="section-38">2850</h1></td>
<td><h1 id="section-39">3336</h1></td>
<td><h1 id="section-40">3455</h1></td>
</tr>
<tr class="even">
<td><h1 id="wos-mean"><strong>WOS mean</strong> </h1></td>
<td><h1 id="section-41">924</h1></td>
<td><h1 id="section-42">1022</h1></td>
<td><h1 id="section-43">1834</h1></td>
<td><h1 id="section-44">1922</h1></td>
<td><h1 id="section-45">1606</h1></td>
<td><h1 id="section-46">2022</h1></td>
<td><h1 id="section-47">1659</h1></td>
<td><h1 id="section-48">1263</h1></td>
<td><h1 id="section-49">1894</h1></td>
<td><h1 id="section-50">1853</h1></td>
</tr>
</tbody>
</table>

#  {#section-51}

# Table 1 -- WOM and WOS Transfers for the past 10 years

#  {#section-52}

# In CY 2001, Northwest hydro output was well below average due to low precipitation in the Columbia watershed. This, as well as reduction of prevalent load at the Goldendale aluminum smelter from 300 MW to 50 MW at Harvalum, caused lowered WOM and WOS transfers during that year. Interconnection of 850 MW of thermal generating capacity near McNary after CY 2001, together with higher runoff, helped to raise WOM and WOS transfers in the two subsequent years. 

#  {#section-53}

# With higher available precipitation runoff for hydro generation, together with the increased thermal generating capacity, higher WOM and WOS transfers should become more probable.

#  {#section-54}

Extended construction-based outages of WOM facilities in occurred in
1994 and 1995, accounting for the abnormally low annual mean average
transfer on WOM and WOS.

A Cumulative Frequency Distribution plot of transfers across the West Of
McNary cutplane from July 2001 through February 2003 is attached.