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Significant Career Achievements 1967-2020: 53 years | 
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| Year | Description | ||||||||
| 1967 | Awarded the Bachelor degree in Civil Engineering (B.C.E.), November 24. | ||||||||
| 1968 |
Awarded the professional title of Civil Engineer, August 10. Thesis title: Drainage Rehabilitation of the Camana Valley. | ||||||||
| 1970 | Awarded the Master of Science degree (Civil Engineering) (M.S.).
Thesis title: Shear strength of sand at extremely low pressures. | ||||||||
| 1976 | Awarded the Doctor of Philosophy degree (Civil Engineering) (Ph.D.).
Thesis title: Boundary-flow interaction in straight alluvial channels. | ||||||||
| 1976 | Appointed Assistant Professor of Civil Engineering at Colorado State University, Fort Collins, Colorado. | ||||||||
| 1977 | Published (with coauthor Daryl B. Simons)
Shallow wave propagation in open-channel flow (ASCE Journal of
Hydraulic Engineering). This paper and its sequel (Applicability of kinematic and diffusion models, 1978)
feature a combined 607
Google scholar citations to date | ||||||||
| 1977 | Published Muskingum-Cunge method with variable parameters (ASCE Journal of Hydraulic Engineering). This paper has 280 Google scholar citations to date (May 2020). | ||||||||
| 1978 | Received (with Daryl B. Simons) the ASCE Karl Emil Hilgard Prize for the paper Shallow wave propagation in open-channel flow (1977). | ||||||||
| 1979 | Retained by the Organization of
American States (OAS) as consultant on the | ||||||||
| 1980 | Appointed Associate Professor of Civil Engineering at San Diego State University, San Diego, California. | ||||||||
| 1996 | Appointed Professor of Civil Engineering at San Diego State University, San Diego, California. | ||||||||
| 1985 | Retained as Consultant on the hydrologic modeling of the Santa Cruz River Basin, | ||||||||
| 1986 | Awarded a sabbatical leave to study flood forecasting at the Instituto Superior Tecnico (IST), Technical University of Lisbon, | ||||||||
| 1986 | Retained by the Organization of American States (OAS) as consultant on the Planning for the Development of the São Francisco River Basin (PLANVASF), Brasilia, Brazil, June and July. | ||||||||
| 1986 | Published the paper Diffusion wave modeling of catchment dynamics, where the diffusion wave model was for the first time applied to an open-book catchment configuration. This paper features 108 Google scholar citations to date (May 2020). | ||||||||
| 1989 | Published the textbook Engineering Hydrology, Principles and Practices,
Prentice Hall. | ||||||||
| 1989 | Retained as International Consultant on the sediment routing of the Pirai river, by the Servicio de Encauzamiento de Aguas y Regularización del Río Piraí (SEARPI), Santa Cruz, Bolivia. | ||||||||
| 1991 | Published the review paper The kinematic wave controversy, where the diffusivity of the convection-diffusion equation of flood routing was for the first time expressed in terms of the Vedernikov number. This paper features 120 Google scholar citations to date (May 2020). | ||||||||
| 1991 | Published the paper New perspective on the Vedernikov number, expanding Hayami's diffusion analogy of flood waves (i.e., diffusion waves) to the realm of dynamic waves. | ||||||||
| 1992 | Published the book
Fortran for Scientists and Engineers,
San Diego State University, | ||||||||
| 1993 | Awarded a sabbatical leave to study drought intensity, duration and frequency at the | ||||||||
| 1995 | Published the 150-page report Hydrologic and Environmental Impact of the Parana-Paraguay Waterway on the Pantanal of Mato Grosso and its Portuguese version. | ||||||||
| 1996 | Appointed to the International Hydrologists' Panel convened for the review of the Environmental Impact Study of the Parana-Paraguay Waterway, Comité Intergubernamental de la Hidrovía (CIH/UNDP), Buenos Aires, Argentina. | ||||||||
| 1996 | Published (with
coauthor Richard H. Hawkins)
Runoff curve number:
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| 1996 | Interviewed Vic Mockus, the developer of the NRCS runoff curve number methodology, prior to writing the closure of the paper Runoff curve number: Has it reached maturity? This was the only interview that Mockus gave for the record on his now famous and much-used methodology. | ||||||||
| 1999 | Initiated the development of
ponce.sdsu.edu, a comprehensive online resource in | ||||||||
| 2000 | Awarded a sabbatical leave to study online engineering, San Diego, California. | ||||||||
| 2000 | Published the paper Characterization of drought across climatic spectrum, introducing a conceptual model of drought intensity-duration-frequency. | ||||||||
| 2001 | Created the
Visualab at San Diego State University, a laboratory dedicated to teaching, research, education and service
in | ||||||||
| 2004 | Created onlinecalc.sdsu.edu, an online calculator portal which features 381 calculators to date (August 2018). | ||||||||
| 2005 | Created The 33 Facts about Global Warming, which has more than has 500 000 visits to date (May 2020). | ||||||||
| 2005 | Appointed to the Panel of Experts convened for the Peer Review of the Regional Simulation Model (RSM) of the South Florida Water Management District, West Palm Beach, Florida. | ||||||||
| 2006 | Appointed to the international consultant team for the Guyana Coastal Flood Protection Program, | ||||||||
| 2007 | Awarded a sabbatical leave to study salinity impacts of irrigation development, with special focus on | ||||||||
| 2007 | Developed Online Modified Einstein, an online calculator of total sediment transport by the Modified Einstein Procedure, a first on the web. | ||||||||
| 2007 | Published the milestone online article Sustainable yield of groundwater. | ||||||||
| 2008 | Retained as International Consultant on the Flood hydrology of the La Leche river | ||||||||
| 2009 | Created all.sdsu.edu, an online video portal for teaching, research, education, and service in water engineering and related topics, featuring 720 videos to date (January 2021). | ||||||||
| 2009 | Retained as International Consultant on the
Environmental impact assessment of the | ||||||||
| 2009 | Created pubs+calcs, a website where users can read a paper online while simultaneously using a related online calculator, a first on the web. The site has now 30 pubs+calcs (Janury 2021). | ||||||||
| 2010 | Retained by
Backcountry Against the Dump as consultant for the review of
the Draft Suplemental Environmental Impact Assessment
for the Campo Regional Landfill Project, | ||||||||
| 2013 | Awarded the degree of Doctor Honoris Causa by the Hermilio Valdizan National University, Huanuco, Peru, June 17. | ||||||||
| 2014 | Published the free online live edition of the textbook Engineering Hydrology, Principles and Practices (2nd edition). | ||||||||
| 2014 | Published the free online (2nd) edition of the book Fortran for Scientists and Engineers. | ||||||||
| 2014 | Presented the invited paper Chow, Froude, and Vedernikov in the Ven T. Chow Commemorative Session of the ASCE EWRI World Environment and Water Resources Congress, held in Portland, Oregon, October 1-4, 2014. | ||||||||
| 2014 | Published the free live online textbook Fundamentals of Open-channel Hydraulics. | ||||||||
| 2014 | Awarded a sabbatical leave to study the nascent field of ecohydroclimatology at the | ||||||||
| 2015 | Published the free live online textbook Fundamentos de la Hidráulica de Canales. | ||||||||
| 2015 | Introduced the concept of live paper for the online reporting of field work in progress, a first on the web. The first live paper is ⇒ The linear oasis: Ecohydrology of red shank. | ||||||||
| 2016 | Developed an online calculator for the inherently stable channel, a channel for which the Vedernikov number is zero (V = 0), regardless of stage or flow depth. a first on the web. | ||||||||
| 2016 | Received
the Monty Award by the Alumni and Associates, of San Diego State University, California,
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| 2016 | Developed an online calculator for the Muskingum-Cunge convergence ratios, enabling the assessment of the numerical accuracy of the Muskingum-Cunge method, a first on the web. | ||||||||
| 2016 | Developed an online calculator for the Thomas problem of flood propagation, enabling the study of runoff diffusion under varying flood characteristics (peak flow and time-to-peak), a first on the web. | ||||||||
| 2017 | Awarded the degree of Doctor Honoris Causa by the National University of Cajamarca, Peru, March 28. | ||||||||
| 2018 | Awarded the title of Professor Emeritus by San Diego State University, upon incorporation into the Faculty Early Retirement Program (FERP) ranks, August 20. | ||||||||
| 2019 | Published the YouTube video The right of Nature to dispose of its salt waste, a 36-min technical video that argues in favor of letting rivers dispose of Nature's salt waste in the oceans. | ||||||||
| 2019 | Published the YouTube video Time Engineering: The singular case of the Salton Basin, an 11-min technical video that introduces the concept of Time Engineering. | ||||||||
| 2019 | Published the YouTube video Effect of global climate change on the White Range of Peru, a 20-min technical video that documents the effects of climate change on the tropical glaciers of Peru. | ||||||||
| 2019 |
Published the online article
The control or roll waves in channelized rivers. The article,
Pub+Calc No. 023, features an online
calculator for β, the exponent of the rating in
a prismatic channel | ||||||||
| 2019 | Published the YouTube video The choice between groundwater use and ecosystem preservation, a 14-min technical video that documents the effects of excessive or unregulated groundwater use on ecosystem preservation. | ||||||||
| 2019 | Published the technical paper The properties of water. The paper is a comprehensive account of the properties of water, considering physical, chemical, and biological properties. | ||||||||
| 2019 | Published the YouTube video Runoff diffusion reexamined, a 10-min technical video that explains the differences between runoff diffusion in reservoirs, channels, and catchments. | ||||||||
| 2019 | Appointed to the Panel of Experts convened for the II Peer Review of the Regional Simulation Model (RSM) of the South Florida Water Management District, West Palm Beach, Florida. | ||||||||
| 2019 | Published the YouTube video The myth of groundwater resource evaluation, a 17-min technical video that explains the myths behind groundwater resource evaluation. | ||||||||
| 2019 | Published the YouTube video The properties of water, a 29-min technical video that explains the physical, chemical, and biological properties of water. | ||||||||
| 2019 | Published the YouTube video Nutrient balance under flood pulse, an 11-min technical video that explains the relationship between flood pulse, denitrification, and nutrient export in riverine floodplain environments. | ||||||||
| 2019 | Published the YouTube video Chow, Froude, and Vedernikov, a 17-min technical video that explains why the Vedernikov number remains to this date an obscure subject in open-channel hydraulics. | ||||||||
| 2019 | Published the YouTube video The S-curve explained, an 20-min technical video that explains the Ponce and Simons 1977 theory of shallow wave propagation. | ||||||||
| 2019 | Published the YouTube video Narrow urban channel draining into Carpintero Lagoon, Tampico, Tamaulipas, Mexico, a 2:17 min technical video that features an online calculation of the Vedernikov number for a narrow urban drainage channel, confirming that it is stable (V < 1), a first on the web. | ||||||||
| 2019 | Published the YouTube video The facts about river basin salinity, an 6:11-min technical video that enumerates thirteen (13) facts about river basin salinity. | ||||||||
| 2019 | Published the YouTube video The facts about groundwater sustainability, an 6:34-min technical video that enumerates thirteen (13) facts about groundwater sustainability. | ||||||||
| 2019 | Published the YouTube video Critical shear stress vs critical velocity, an 4:30-min technical video that formulates the relationship between critical shear stress and critical velocity (in open-channel flow) in terms of the Chezy dimensionless friction factor f. | ||||||||
| 2019 | Published the YouTube video 1000 years of Mississippi-Atchafalaya history, an 3:21-min technical video that describes the interaction between the Mississippi river and its Atchafalaya distributary in the past 1000 years. | ||||||||
| 2020 | Published the YouTube video Plants and animals: How many are they?, an 8:04-min technical video that relates the varying concentration of carbon dioxide in the atmosphere to the varying terrestrial banks of floral and faunal biomass, thus underpinning anthropogenic global warming. | ||||||||
| 2020 | Published the YouTube video How much water could be pumped from an aquifer to remain sustainable?, an 20:37-min technical video that compares the concepts of safe yield and sustainable yield, and uses L'vovich's cybernetic water balance to evaluate vertical groundwater recharge. | ||||||||
| 2020 | Published the YouTube video Diseño de un canal estable con fuerte pendiente, in Spanish, an 11:04-min that shows how to design a stable channel with a steep slope, using the exponent of the discharge-flow area rating. | ||||||||
| 2020 | Published the YouTube video My conversation with Vic Mockus, an 6:15-min video that details Prof. Ponce's conversation, in July of 1996, with Vic Mockus, the developer of the runoff curve number method, NRCS's popular hydrologic method for the estimation/calculation of surface runoff, originally published in 1954. | ||||||||
| 2020 | Published the YouTube video Facts on Lake Titicaca, an 12:37-min technical video that describes the most relevant meteorological and hydrological facts on Lake Titicaca, the highest navigable lake in the world. | ||||||||
| 2020 | Published the YouTube video The true source of the Missouri river, an 5:12-min technical video that pinpoints the true source of the Missouri river, on the southeastern slope of Mount Jefferson, on the Centennial Mountains of the Bitterroot Range, right on the U.S. Continental Divide. | ||||||||
| 2020 | Published the YouTube video Muskingum-Cunge method explained, a 10:15-min technical video that explains the capabilities of the Muskingum-Cunge method of flood routing. | ||||||||
| 2020 | Published the YouTube video Q&A on the return period to be used for design, an 8:11-min technical video that answers questions on how to choose the return period for hydraulic design. | ||||||||
| 2020 | Published the YouTube video The price to pay for agricultural sustainability, a 9:59-min technical video that explains the plight of arid-land irrigated agriculture in view of the salinity menace. | ||||||||
| 2020 | Published the YouTube video Initial abstraction revisited, an 5:29-min technical video that revisits the initial abstraction concept in the runoff curve number methodology. | ||||||||
| 2020 | Published the YouTube video Cascade and Convolution: One and the same, a 5:29-min technical video that explains and compared the hydrologic methods of cascade of linear reservoirs and effective hyetograph convolution. | ||||||||
| 2020 | Published the YouTube video General dimensionless unit hydrograph, an 6:27-min technical video that describes the development of the general dimensionless unit hydrograph. | ||||||||
| 2020 | Published the YouTube video Origin of the New river, a 3:21-min technical video that tells the story of the creation of the New river, in Imperial Couty, California, in 1905, as a river diversion gone awry. | ||||||||
| 2020 | Published the YouTube video The resource dilemma: The settlement of less-than-otimal lands, an 4:54-min technical video that explains the dilemma of effectively using water and nutrients resources together, without causing salinity problems. | ||||||||
| 2020 | Published the YouTube video Creager and flood wave diffusion, a 6:14-min technical video that reinterprets the Creager curves in light of the prevailing theory of flood wave diffusion. | ||||||||
| 2020 | Published the YouTube video Runoff diffusion reexamined, an 9:12-min technical video that reexamines the concept of runoff diffusion in order to clarify its role in connection with unsteady free-surface flow routing in reservoirs, channels, and watersheds/basins. | ||||||||
| 2020 | Published the YouTube video Effect of form friction on the sediment rating curve, an 8:04-min technical video that examines six measured sediment rating curves through a wide range of discharges. At high discharges, the sediment rating curve tends to asymptotically approach a maximum sediment concentration. that reinterprets the Creager curves in light of the prevailing theory of flood wave diffusion. | ||||||||
| 2020 | Published the YouTube video Synthetic unit hydrographs explained, a 7:04-min technical video that reviews and compares the various synthetic unit hydrographs currently in use. | ||||||||
| 2020 | Published the YouTube video How did Las Vegas get its name?, a 2:34-min technical video that traces the origin of the name "Las Vegas" to the Armijo expedition of early California in 1829. | ||||||||
| 2020 | Published the YouTube video Will the Amazon rainforest help in taking up excess carbon from the air, a 5:14-min technical video that argues that the Amazon rainforest will not be able to uptake the excess carbon currently in the atmosphere due to the burning of fossil fuels. | ||||||||
| 2020 | Published the YouTube video The price to pay for sequestering all runoff, a 4:45-min technical video that argues in favor of reserving a certain amount of river runoff to carry the salts to the ocean. | ||||||||
| 2020 | Published the YouTube video The 800-mm isohyet, a 6:16-min technical video that explains why a regions with 800 mm of mean annual precipitation is likely to have a good supply of both water and nutrients to support both health and hope. | ||||||||
| 2020 | Published the YouTube video Andes, Hyelan, and Craton: The Faces of the Rivers, a 15:13-min technical video that describes the colors or Amazonian basin waters in terms of the geological, geomorphological, hydrological, and ecological properties. | ||||||||
| 2020 | Published the YouTube video The ford bridge: Sustainable river crossings in arid regions, a 8:01-min technical video which describes the ford-bridge, a structure that has the properties of both fords and bridges, to be used in wide ephemeral streams and rivers in arid regions. | ||||||||
| 2020 | Published the YouTube video The age of impermanence, a 7:03-min video that describes the new phenonemon of online publishing, with its advantages and disadvantages. | ||||||||
| 2020 | Published the YouTube video Cognitive learning: A vector/raster roller-coaster, a 3:32-min video that contrasts the use of vector and raster formats throughout the past 500 years of human history. | ||||||||
| 2020 | Published the YouTube video Milestones in global climate change, a 3:14-min video that describes the milestones in global climate change. | ||||||||
| 2020 | Published the YouTube video Intelligent video: A new way to communicate effectively, a 4:07-min video that describes intelligent videos, which contain a balanced mix of raster, vector, voice, music, still photos, and animation components. | ||||||||
| 2020 | Published the YouTube video How? What? When? Old energy vs. new energy, a 4:13-min video that compares the usage of old energy vs. new energy. | ||||||||
| 2020 | Published the YouTube video Gradually varied flow profiles using critical slope, a 12:53-min video that expresses the gradually varied flow equation (of open-channel flow) in terms of critical slope, thus, precisely resolving the variation of the depth gradient. | ||||||||
| 2020 | Published the YouTube video Andes, Hyelan, and Craton: The Faces of the Rivers, a 15:19-min video that describes and compares the properties of the three types of rivers of the Amazon basin, in relation to the color of their waters | ||||||||
| 2020 | Published the YouTube video Sustainable runoff for basin salt balance, a 10:42-min video that calculates the amount of runoff that must be kept in a river in order to achieve a certain measure of basin salt balance. | ||||||||
| 2020 | Published the YouTube video Why is the cybernetic hydrologic balance better suited for yield hydrology than the conventional approach, a 10:44-min video that compares the cybernetic hydrologic balance of L'vovich with the conventional method, concluding that the latter has a double counting problem which precludes it from being accurately applied for yield hydrology. | ||||||||
| 2020 | Published the YouTube video A dimensionless convection-diffusion-dispersion model of flood waves, a 8:46-min video that presents the three-dimensional equation of flood waves, and the respective coefficients of convection, diffusion, and dispersion, in both dimensional and dimensionless form. | ||||||||
| 2021 | Published the YouTube video Effect of groundwater pumping on arid vegetative ecosystems, a 48:05-min video that highlights the plight of arid vegetative ecosystems when they find themselves in competition with groundwater pumping for the shared water recourse. | ||||||||
| 2021 | Published the YouTube video Time engineering: The singular case of the Salton Basin, a 13:56-min video that links the concepts of engineering, time, and sustainability with focus on the plight of the Salton Basin, in California. | ||||||||
| September 2021 | Prof. Ponce's Google scholar record, beginning in 1983, is: h-index = 30 (30 publications cited at least 30 times); i10-index = 48 (48 publications cited at least 10 times); and total number of citations = 5 478. |
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Prof. Ponce's website (ponce.sdsu.edu), established in 1999,
has been visited more than
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Prof. Ponce's two (2) Youtube channels, established in 2011,
have 2527 subcribers to date.
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