Editing Napa County, California (section)

===20th and 21st centuries===
[[File:Napa Valley grapes Photo D Ramey Logan 02.JPG|right|thumb|Napa Valley grapes]]
By the end of the 1900s, farmers had planted over 500,000 fruit and nut trees in the county, especially plums and pears. This helped to soften the blows to the agricultural economy caused by the phylloxera infestation in the county's vineyards and upcoming prohibition that crippled the wine industry, but resulted in a boom for shipping grapes to immigrant, home winemakers across the country.

During [[World War II]], the [[Basalt Rock Company]] located south of the City of Napa on the Napa River, built 3 dozen [[Rescue and salvage ship|salvage rescue tugs]] for the [[United States Navy]].<ref name="AutoZC-9"/> German prisoners of war were housed in a [[Beale Air Force Base|Camp Beale]] satellite prisoner of war camp near Yountville.<ref>{{cite news |title=Forgotten history: German POWs worked at Napa ranches during war |newspaper=[[Napa Valley Register]] |url=https://napavalleyregister.com/news/local/forgotten-history-german-pows-worked-at-napa-ranches-during-war/article_acf71d66-88d6-5c99-bd9b-c191b97790b6.html |accessdate=March 7, 2022 |date=February 12, 2022 |last=Huffman |first=Jennifer}}</ref>  The prisoners were utilized to supplement a dwindled able bodied agricultural labor force caused by the needs of the American war effort.

Following the war, several new small and medium size businesses began operating in the county. A large majority of these businesses were related to the wine industry and tourism. Agriculture in the county remained very diverse until late in the 20th century when wine grapes again became the primary focus. While vineyards were planted on well over 90% of the agricultural land in the county, by the end of the 20th century, modern day farmers have recently begun exploring the possibility of raising other food crops in order to again diversify and take advantage of growing conditions.<ref name="AutoZC-10"/>

At 3:20&nbsp;a.m. on August 24, 2014, the area was struck by a [[2014 South Napa earthquake|magnitude 6.0 earthquake]] centered {{convert|3.7|mi|km}} northwest of the city of [[American Canyon, California|American Canyon]].<ref name="BBC-28918600"/><ref name="AutoZC-11"/>

In October 2017, parts of the county were affected by [[October 2017 Northern California wildfires|wildfires]].

From June to July 2018, the [[County Fire]] affected a small part of Napa County after crossing over from [[Yolo County, California]].<ref>{{Cite news|url=http://www.lakeconews.com/index.php/news/56691-county-fire-grows-crosses-into-napa-county-more-evacuation-orders-advisories-issued|title=County fire grows, crosses into Napa County; more evacuation orders, advisories issued|last=Larson|first=Elizabeth|date=July 1, 2018|work=Lake County News|access-date=October 27, 2019}}</ref>

In October 2019, heavy smoke and unscheduled black outs by [[Pacific Gas and Electric Company]] of up to 20,000 customers affected the county due to fierce winds and threats from the [[Kincade Fire]].<ref>{{Cite news|url=https://napavalleyregister.com/news/local/more-outages-strike-napa-county-after-fierce-overnight-winds-local/article_73775681-7e0e-5768-a5bd-f8c6400eda8a.html|title=More outages strike Napa County after fierce overnight winds; local shelters to open for Sonoma County wildfire evacuees|last1=Yune|first1=Howard|date=October 27, 2019|work=Napa Valley Register|access-date=October 27, 2019|last2=Sweeney|first2=Cynthia|publication-place=Napa, California}}</ref>