On June 1, 1895, Matthes started his first job as an instrument man and
draftsman for the city engineer's office of
Rutland, Vermont. He helped create detailed topographic surveys within the city. For a time, he performed as the acting head draftsman, in charge of revision work in the field. On April 1, 1898, after passing the federal
Civil Service examination, he advanced in grade to assistant topographer. The Geological Survey had determined to map little known remote areas of the
western United States and Matthes' assignments over the next years were: • 1898: during summer, resumed the survey, started by H.S. Wallace, of the
Cloud Peak quadrangle in
Wyoming. • 1899: during summer, finished the Cloud Peak quadrangle in Wyoming. • 1900: during spring, a
hydrographic reconnaissance of the
Blackfoot Indian Reservation in
Montana. • 1900: during summer, the
Chief Mountain quadrangle in Montana. • 1900-01: during winter, the
Bradshaw Mountains quadrangle in
Arizona. • 1901: during summer, the
Browning quadrangle in Montana. • 1902: during summer, started the
Grand Canyon quadrangle in Arizona. • 1902-03: during winter, the
Jerome quadrangle in
Arizona. • 1903: during summer, completed the
Grand Canyon quadrangle in
Arizona. • 1904: Matthes began a postgraduate degree in geology at
Harvard University, majoring in
geomorphology under Professor
William Morris Davis. He also lectured under an
Austin Teaching Fellowship about topographic methods to advanced geology students. • 1905: during spring, with only a few weeks left to complete his degree, Matthes was offered the opportunity to map the
Yosemite Valley in
California. Due to the short season for field work in the
Sierra Nevada mountain range, Matthes immediately accepted the assignment and abandoned his degree. • 1905: during summer, started the Yosemite quadrangle, which presented him with more difficulties than had the Grand Canyon. • 1906: during spring, Matthes was assigned to
Berkeley, California, to assist
Grove Karl Gilbert study transportation of sediment in rivers. On April 18, both men witnessed the devastation across the bay caused by the
San Francisco earthquake. Their study postponed, Gilbert was appointed to the California State Earthquake Investigating Commission and directed Matthes to map the
San Andreas Fault. His maps were published by the commission in their two volume findings. • 1906: during summer, completed Yosemite quadrangle. • 1907-13: through these years, Matthes served as Inspector of Topographic Surveys for the Western United States. He would, during summer, visit the scattered field parties and, during winter, supervise the drafting and inking of their field manuscripts in
Washington, D.C. • 1910: during summer, started the
Mount Rainier quadrant in
Washington. • 1911: during summer, continued Mount Rainier, but completed only the southwestern quarter due to poor visibility from bad weather and forest fires. That was his last major field assignment for the Topographic Branch. As party chief at the Wyoming quadrangle, Matthes' effectively organized his crew and equipment for long pack trips through remote areas, physically strenuous to access and traverse. His techniques in working the
alidade and
plane table "contributed notably to the effectiveness of mapping rugged mountain areas". On July 1, 1899, he was promoted to the rank of full topographer. Matthes believed topographers should not merely draw lines but also study the geology of the land forms to produce relevant maps. To that end, Matthes wrote his first scientific publication during the winter of 1899 entitled
Glacial Sculpture of the Bighorn Mountains, Wyoming which served as a standard reference and in which Matthes applied the first usage of the term "
nivation". His geologic writing was not a customary effort for topographers and his descriptive style was critiqued by the USGS but the popularity of his narratives continues today. ==Marriage==