Old Map of Davis, California by USGS, 1915 – Yolo County & Putah Creek

Published in 1915 by the United States Geological Survey, the map titled “Swingle” presents a finely measured portrait of the Davis area of Yolo County, California, at a scale of 1:31,680. It captures a landscape poised between open rural settlement and the infrastructural changes that would shape the Central Valley in the twentieth century. Davis appears as the principal populated place, set within a wider pattern of roads, rail lines, fields, waterways, and lightly settled agricultural land. The map’s colored contours and crisp symbology give the terrain an elegant clarity, translating elevation, drainage, and human movement into a precise visual language. As a historical document, it preserves the region before later urban expansion and intensified agricultural transformation altered the character of the land.

The US Geological Survey brought to this map the institutional authority and technical rigor that made its topographic sheets indispensable to engineers, land managers, scientists, and travelers. Established in 1879, the USGS became the nation’s great cartographic surveyor, systematically recording the physical structure of the United States through contour mapping, hydrological detail, and standardized geographic notation. In “Swingle,” that disciplined approach is evident in the balance between accuracy and readability: roads and railways are set against creeks, ponds, and subtle relief, while the rural grid of settlement is rendered with quiet confidence. The result is not merely a utilitarian survey, but a carefully composed record of place, reflecting the Progressive Era’s faith in measurement, classification, and informed stewardship of land and resources.

Davis and its surrounding agricultural country form the human heart of the map. In 1915, the town was still closely tied to farming, transportation, and the emerging educational and scientific institutions that would later define its identity. The map shows a region structured by practical movement: railways and roads trace the connections between settlement, market, and field, revealing how communities in Yolo County were linked to the wider Sacramento Valley. Around Davis, the mapped landscape suggests a low-density rural world of cultivated parcels, open spaces, and scattered features, long before the dramatic suburban and institutional growth of later decades. For collectors, this makes the sheet especially evocative: it records Davis not as a mature university city, but as a developing agricultural place.

Putah Creek is one of the most important natural features shown, lending the map both geographical coherence and historical resonance. Flowing along the southern edge of the Davis region, the creek helped shape settlement, agriculture, drainage, and local ecology. Its presence on the map reminds us that the Central Valley was not merely a flat expanse awaiting cultivation, but a dynamic hydrological landscape of seasonal watercourses, ponds, and low-lying wet areas. The various unnamed lakes and ponds depicted across the sheet add texture to this environmental picture, suggesting habitats and drainage patterns that may have changed significantly with irrigation, reclamation, and modern land management. Through these waterways, the map captures a quieter California, where rural life remained closely attuned to water.

The topographic character of “Swingle” is especially appealing, with contour lines, colored markings, and conventional symbols working together to convey both landform and land use. Although the Davis area is not mountainous, the map’s contours reveal subtle variations in elevation that mattered deeply for drainage, road building, farming, and settlement. The visual language is spare yet expressive: transportation routes cut across the countryside, water bodies punctuate the plain, and possible vegetated or wooded areas add environmental detail. This combination of natural and constructed features gives the map unusual historical richness. It is a snapshot of Yolo County at a pivotal moment, when older rural patterns were still visible and the forces of modernization were beginning to leave their durable marks on the landscape.

Cities, towns and places on this map

• Davis
• Yolo County
• Putah Creek
• Various unnamed lakes and ponds
• Railways and roads related to transportation routes
• Neighbors of Davis, including agricultural areas
• Spaces indicating possible vegetation or forested areas

Historical context & cartographic details

• Map title: Swingle
• Produced by the US Geological Survey.
• Published in 1915.
• Scale: 1:31,680.
• The US Geological Survey was a major force in American topographic mapping, providing accurate survey data for land and resource management.
• The map displays elevation contours, water bodies, and road routes to show both natural and constructed landscape features.
• The 1915 map captures the region’s rural landscape before substantial urban development and agricultural change.
• Colored contours and distinct markings were used to communicate elevation and land use clearly.

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