(323) 573-0962

About Us

black-crowned night-heron

About Streamscape Environmental LLC

Streamscape Environmental LLC provides straightforward GIS solutions for environmental specialists and organizations who lack the tools, time, or expertise to analyze and display their geographic data. We will take your data in any format (whether hard copy or in electronic form) and combine it with existing geographic data and base layers, to analyze your data, answer your research questions, and produce high quality custom maps, designed to your specifications. We strive to provide quality products quickly and at a price that easily fits any budget. Send us a free Estimate Request to get started.

Our Philosophy

At Streamscape Environmental LLC we understand that many small environmental organizations and independent consultants don’t have access to affordable GIS services. In this technological age, it is often vital to display your geographic and environmental data in reports and presentations. GIS and imaging software can be expensive, difficult to learn, and time consuming.  Large GIS consulting firms offer expensive and often overly-complicated options.  Although a more affordable option, interns and volunteers are typically just learning the programs, meaning slower progress and less professional results. In contrast, Streamscape Environmental LLC provides quick, professional, and affordable results to meet your needs and fit your budget and timeline.

Salvador Contreras, Principal Biologist/GIS Specialist

Salvador Contreras joined Streamscape Environmental LLC in 2017, after leaving his position with Mexico’s Commission of Natural Protected Areas (CONANP) to move to Los Angeles. In Mexico, Sal worked as a Program Manager in the Sierra Gorda Biosphere Reserve of Guanajuato for more than eight years. Prior to CONANP, Sal worked as an environmental consultant conducting environmental impact assessments for development projects in central Mexico. He completed his undergraduate degree in Biology from the Autonomous University of Queretaro (UAQ), Mexico, in 2004, and he has completed two postgraduate certificates in watershed management and local development.

Salvador brings over 15 years of research design, project management, and GIS experience to his role as lead biologist at Streamscape Environmental LLC. He is a skilled biologist, photographer, and project manager. He has extensive experience conducting wildlife surveys and utilizing camera traps to study wildlife communities in extremely remote locations. Recently he has been involved in two entomological research projects with Rosi Dagit at RCDSMM, studying the spread of the Polyphagous/Kuroshio Shot Hole Borers in the Santa Monica Mountains and studying drought effects on benthic macroinvertebrate communities in Topanga Creek.

Jennifer Mongolo, Administrative Manager

Jennifer Mongolo is the original founder of Streamscape Environmental LLC and retains an active role in managing the business. She is a bilingual environmental scientist with extensive experience in integrated resource management, including conservation and restoration planning, environmental analysis, and geographic information systems (GIS). For more than fifteen years she has worked with and studied natural resources in the United States and Mexico. Through her studies and professional experience, she has developed an intimate understanding of the complexities relating to resource management and the great need for cooperative planning, sustainable development, and biodiversity conservation.

Jen currently works full time as a Biologist at Los Angeles County Department of Regional Planning. She continues to collaborate on research projects within Los Angeles County and consulting work outside of the unincorporated areas of Los Angeles County.


Mongolo, Jennifer; Trusso, Nina; Dagit, Rosi; Aguilar, Andres; and Drill, Sabrina L. (2017) “A longitudinal temperature profile of the Los Angeles River from June through October 2016,”Bulletin of the Southern California Academy of Sciences: Vol. 116: Iss. 3. Available at:

Dagit, Rosi; Bell, Ethan; Adamek, Krista; Mongolo, Jennifer; Montgomery, Elizabeth; Trusso, Nina; and Baker, Peter (2017) “The effects of a prolonged drought on southern Steelhead Trout (Oncorhynchus mykiss) in a coastal creek, Los Angeles County, California,” Bulletin of the Southern California Academy of Sciences: Vol. 116: Iss. 3. Available at:

Cooper, Daniel; Mongolo, Jennifer; Chris Dellith (2017). Status of the California Gnatcatcher at the northern edge of its range. Western Birds. 48. 124-140. 10.21199/WB48.2.3. Available at:

Pineda, Raul; Salgado-Maldonado, Guillermo; Soto-Galera, Eduardo; Hernández-Camacho, Norma; Orozco-Zamorano, Anita; Contreras-Robledo, Salvador; Cabañas-Carranza, Guillermina; Aguilar-Aguilar, Rogelio. (2005). Helminth parasites of viviparous fishes in Mexico. In book: Viviparous Fishes. New Life Publications. Editors: Mari Carmen Uribe, Harry J. Grier. pp.455-474. Available at: