New Mexico Interstate Stream Commission

Santa Fe, NM, United States

New Mexico Interstate Stream Commission

Santa Fe, NM, United States
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Hutson A.M.,New Mexico Interstate Stream Commission | Toya L.A.,New Mexico Interstate Stream Commission | Tave D.,New Mexico Interstate Stream Commission | Porter M.D.,U.S. Army
Journal of Applied Aquaculture | Year: 2017

The lower lethal temperature of the endangered Rio Grande silvery minnow, Hybognathus amarus, was estimated from survival rates of fish overwintered in above-ground tanks. Temperature went to 0.0°C both winters. In 2012–2013, survival of Age class 0 fish was 79.87%, and in 2013–2014, survival of Age class 1 fish was 97.1%, suggesting that if Rio Grande silvery minnow is subjected to seasonal temperature changes, lower lethal temperature is ≤0.0°C. Results show that heating hatchery water in the winter is unnecessary. Additionally, current management guidelines that preclude reintroduction of the species into river sections where winter temperatures are ≤1°C must be reevaluated. © 2017 Taylor & Francis

Widmer A.M.,SWCA Environmental Consultants | Burckhardt L.L.,SWCA Environmental Consultants | Kehmeier J.W.,SWCA Environmental Consultants | Gonzales E.J.,SWCA Environmental Consultants | And 3 more authors.
North American Journal of Fisheries Management | Year: 2010

Multiple-pass removal by use of small-mesh seines within enclosed areas was performed to estimate numbers of nine small-bodied fish species at 17 sites in the Pecos River, New Mexico, during October 2007. Site-level population estimates were most precise for age-0 red shiners Cyprinella lutrensis (coefficient of variation [CV, calculated as SE/mean] = 0.02-0.06) and least precise for age-1 and older plains minnow Hybognathus placitus (CV = 0.03-0.42). Site estimates were expanded to derive species- and age-specific population estimates for 284 km of river, including the full range of the threatened Pecos bluntnose shiner Notropis simus pecosensis (101,131 fish; 95% confidence interval = 76,437-125,825; CV = 0.12). Population estimates and species detection from multiple-pass removal were compared with a closed, comprehensive, single-pass catch rate index obtained on the first pass of the removal estimate (comprehensive catch per effort [C-CPE]) and with an open, single-pass catch rate index (single-pass catch per effort [S-CPE]), where a set of representative mesohabitats was seined in proportion to their availability (mean = 12.6 hauls/site). Compared with removal estimates, C-CPE provided a reliable index of population size for the nine small-bodied species combined (r2 = 0.90, P = 0.010) but did not perform as reliably for adult Pecos bluntnose shiners (r2 = 0.51) or age-0 speckled chub Macrhybopsis aestivalis (r2 = 0.70). On average, C-CPE detected 89% of species at a site, missing predatory species most frequently. By contrast, S-CPE was a poor index of population size for all species (r2 = 0.16, P = 0.010) and detected an average of 52% of species at a site. The S-CPE failed to detect the Rio Grande shiner N. jemezanus at 28.5% of sites, the sand shiner N. stramineus at 41.2% of sites, the Pecos bluntnose shiner at 29.4% of sites, and the speckled chub at 23.5% of sites; all of these are small-boded native species. For applications that require reliable species detection and precise abundance estimates of small-bodied fishes, the multiple-pass removal method is recommended. © Copyright by the American Fisheries Society 2010.

Widmer A.M.,SWCA Environmental Consultants | Fluder J.J.,SWCA Environmental Consultants | Kehmeier J.W.,SWCA Environmental Consultants | Medley C.N.,New Mexico Interstate Stream Commission | And 2 more authors.
River Research and Applications | Year: 2012

Long-distance drift of eggs and larvae has been identified as a possible cause of downstream displacement and poor recruitment of the endangered Rio Grande silvery minnow (Hybognathus amarus; silvery minnow). Seven experiments were conducted using artificial eggs to estimate silvery minnow egg drift and retention in the Albuquerque and Isleta reaches of the regulated Middle Rio Grande, New Mexico, USA over a range of flows during expected spawning times. Bead retention varied by reach, discharge, and shape of the hydrograph. Highest retention (6.9 and 9.7% per km in the Albuquerque and Isleta reaches, respectively) occurred on the ascending limb of a high flow in areas where there was substantial floodplain inundation. Retention was maximized at different flows in each reach (97 and 140m 3/s, respectively), possibly associated with reach-specific floodplain inundation thresholds. Lowest retention in each reach (2.1 and 1.7%, respectively) occurred on the descending limb of low and high flows, respectively. Of the silvery minnow eggs produced in the combined Albuquerque and Isleta reaches in 2005, 8-14% are predicted to have been retained in the Albuquerque Reach (67km) and 49-83% in the Isleta Reach (86km) based on the distribution of adult fish and measured bead retention rates. Although silvery minnow propagules are capable of drifting long distances, our study suggests that considerable retention occurs in the Middle Rio Grande. Habitat restoration to increase channel habitat complexity, and flow management to promote floodplain inundation should help to retain a greater proportion of propagules in upstream reaches. © 2010 John Wiley & Sons, Ltd.

Kinzli K.-D.,Florida Gulf Coast University | Gensler D.,Middle Rio Grande Conservancy District | Oad R.,Colorado State University | Shafike N.,New Mexico Interstate Stream Commission
Journal of Irrigation and Drainage Engineering | Year: 2015

Decision support systems (DSSs) for irrigation system management have many benefits, which include water savings and the development of optimal water delivery schedules, while maintaining farmer productivity. To address water shortage and improve water delivery, DSSs have been developed and utilized throughout the United States and the world and can be used to predict crop depletions using weather data to schedule water delivery on the basis of crop demand. The overall utility of DSSs is that they allow managers to continue water delivery and equitably distribute supplies during a water shortage. For a decision support system to be successfully utilized, the complicated challenge of implementation needs to be addressed. Decision support system implementation is often met with harsh resistance from water users and managers alike, and, in many cases, a scientifically sound model is often rejected because of misinformation and lack of user education. This paper presents the successful implementation of a DSS and scheduled water delivery in the Middle Rio Grande Conservancy District (MRGCD). The implementation of the DSS was accomplished using a multifaceted approach that included gaining political support of the MRGCD Governing Board, training water masters and ditch riders in the use of the DSS, providing on-the-ground support and assistance, refining parameters in the DSS to address complexities, and gaining public acceptance for scheduled water delivery utilizing a DSS. A total of two key components for the implementation of the DSS and scheduled water delivery were linking it to the MRGCD supervisory control and data acquisition system (SCADA) and conducting a large public outreach and education campaign. The overall results of the DSS implementation were successful, and managers were able to deliver water to irrigators in a more efficient manner than traditional practice. © 2015 American Society of Civil Engineers.

Tarefder R.,University of New Mexico | Faisal H.,University of New Mexico | Sobien H.,University of New Mexico | Sobien H.,New Mexico Interstate Stream Commission
Journal of Materials in Civil Engineering | Year: 2014

Asphalt concrete (AC) consists of approximately 95% aggregate, by weight. Of this 95%, about 6% is smaller than 0.075 mm in size (passing the #200 sieve and called filler). The fillers often contain mica, which is a formation of silicate minerals having perfect basal cleavage. Mica has been shown to reduce the strength of AC. This study evaluates the effects of mica on asphalt materials subjected to aging. Mica is combined with asphalt binders to make mastics. Mastics are aged at four different levels and tested by nanoindentation to determine modulus and hardness values. It is shown that mastic with no mica becomes much harder after long-term aging. Aged mastic with no mica is shown to be harder than the aged mastics with low concentrations of mica. Mastic with less than 5% mica in the fillers behaves similarly to binder. However, with a mica content of 7.5%, the modulus decreases after long-term aging. A mastic sample containing 5% mica is shown to have the highest modulus value. Therefore, low-concentration mica reduces hardness but increases modulus value of aged mastic. Therefore, mica can be used to control long-term aging behavior of asphalt concrete. © 2014 American Society of Civil Engineers.

Marcus M.D.,Tetra Tech Inc. | Covington S.,Formation Environmental LLC | Liu B.,New Mexico Interstate Stream Commission | Smith N.R.,Tetra Tech Inc. | Smith N.R.,AECOM Technology Corporation
Science of the Total Environment | Year: 2010

A screening-level ecological risk assessment was applied to two extensive, but previously unanalyzed datasets from the middle Rio Grande (MRG) in New Mexico. The assessment evaluated how adverse water-quality effects from aquatic toxicants may have influenced the population decline of the endangered Rio Grande silvery minnow (Hybognathus amarus; silvery minnow). Standardized US Environmental Protection Agency (USEPA) screening-level ecological risk assessment procedures were applied to chemicals assessed in samples collected from the MRG between 1985 and 2003. Since more chemicals have established risk-screening criteria, relative to water-quality criteria, this approach produces more complete assessments. Chemical concentrations at some locations and times were potentially sufficient to affect fish health or produce localized mortalities. Many constituents displaying the highest risks have substantial natural sources within the watershed; native species likely would have adapted to natural instream concentrations such that actual risks might be markedly less than projected by a risk screening based on generic aquatic-life criteria. Also, highest risks found for individual and combinations of contaminants were very inconsistent both within and across the sites. As such, this risk assessment does not support the conclusion that toxicants were a primary factor causing the silvery minnow population to decline in the MRG between 1985 and 2003. The assessment indicates that sediment-borne, relative to water-borne, contaminants appeared to present the greatest risks to the silvery minnow and thus should have increased focus during future assessments of potential contaminant effects in the MRG. Contaminants of greatest concern are identified. This study presents approaches to cost-effectively assess and reduce uncertainties associated with potential water quality effects, and to help direct future assessments of water quality onto those contaminants likely to produce potentially significant effects. The techniques presented and criteria compiled are suitable for aiding similar assessments in other aquatic habitats. © 2010 Elsevier B.V.

Hutson A.M.,New Mexico Interstate Stream Commission | Toya L.A.,New Mexico Interstate Stream Commission | Tave D.,New Mexico Interstate Stream Commission
Journal of the World Aquaculture Society | Year: 2012

This article describes the initial season-long yield trial of raising the endangered Rio Grande silvery minnow, Hybognathus amarus, in the conservation rearing facility at the Los Lunas Silvery Minnow Refugium. Ten thousand fish (90,900/ha) were stocked on June 22, 2010. Production was based on a total of 653 mL (5.936 L/ha) of 11-37-0 N-P-K and 5.5 kg (50 kg/ha) of alfalfa pellets. Fish were harvested in October; almost all were harvested 18-27 October. At stocking, fish averaged 21.7 mm total length and mean weight was 0.10 g. At harvest, fish averaged 48.98 mm and 1.12 g. Fish were sampled monthly, and increased lengths and weights through the study were significant (P = 0.05). Five thousand eight hundred ninety-two fish were harvested (58.92% survival). Yield was 59.99 kg/ha. Temperature, dissolved oxygen (DO), pH, un-ionized ammonia, nitrite, turbidity, alkalinity, and chloride were measured at seven sites throughout the outdoor refugium. Secchi disc visibility was measured in the stream and in the ponds. Only two variables (DO and pH) went outside permitted values, but were easily corrected. Harvest was difficult due to the many different naturalized areas consisting of varying depths, channel widths, and substrates. © by the World Aquaculture Society 2012.

Stuart C.T.,Tetra Tech Inc. | Mussetter R.A.,Tetra Tech Inc. | Shafike N.,New Mexico Interstate Stream Commission
World Environmental and Water Resources Congress 2012: Crossing Boundaries, Proceedings of the 2012 Congress | Year: 2012

The approximately 65-km reach of the predominantly sand-bed Middle Rio Grande between the Angostura and Isleta Diversion Dams has been significantly modified by human activities, and the reach continues to respond to these and other factors. Construction of Cochiti Dam reduced the magnitude and frequency of flood peaks and the downstream sediment supply, causing 0.6 to 2.4 m of degradation in the reaches below the dam. Ongoing efforts to improve the efficiency of downstream water delivery and instream habitat will cause additional modifications to both the physical system and the quantity and timing of flows through the reach. To help understand the factors that control the behavior of the river and provide a tool to evaluate potential impacts of future changes, a one-dimensional (1-D) sediment routing model of the reach was developed and calibrated using the HEC-6T computer program. © 2012 ASCE.

Hutson A.M.,New Mexico Interstate Stream Commission | Toya L.A.,New Mexico Interstate Stream Commission | Tave D.,New Mexico Interstate Stream Commission
Fisheries and Aquatic Science | Year: 2013

The endangered Rio Grande silvery minnow Hybognathus amarus was cultured in 2.44-m-diameter outdoor tanks in a 131-day yield trial to assess growth, survival, and percentage of taggable-sized fish (>35 mm total length) when stocked at 500/tank (1.07 million/ha), 1,000/tank (2.14 million/ha), and 1,500/tank (3.21 million/ha). At harvest, fish averaged 45.6 mm and 0.94 g in the 500/tank treatment, 42.6 mm and 0.74 g in the 1,000/tank treatment, and 38.4 mm and 0.55 g in the 1,500/tank treatment; the differences were significant (P = 0.05). Survival in the three treatments was 70%, 64%, and 52%, respectively, but the differences were not significant. Percent taggable-sized fish was 86%, 89%, and 65%, respectively, but the differences were not significant. Yield was 672.5 kg/ha, 1,026.6 kg/ha, and 887.8 kg/ha, respectively; yield in the 1,000/tank treatment was significantly greater than that in the 500/tank treatment, but was not significantly greater than that of the 1,500/tank treatment. This facility is a conservation facility and a major goal is to raise fish without formulated feed. Fertilization produced good growth for the first month, but little growth occurred during the second month so supplemental feed had to be used for the final 60 d of the yield trial. © 2013 The Korean Society of Fisheries and Aquatic Science.

Tave D.,New Mexico Interstate Stream Commission | Haggerty G.M.,New Mexico Interstate Stream Commission
Ecohydrology | Year: 2014

Geomorphic changes resulting from the construction of dams, irrigation diversion structures, and flood control levees has separated the Rio Grande from its floodplain contributing to the decline of native fish species including the endangered Rio Grande silvery minnow (Hybognathus amarus). The species is currently restricted to 280-km of the river in New Mexico. Since 2006, the New Mexico Interstate Stream Commission has constructed 121ha of floodplain habitat between the river levees to improve habitat. To determine if constructed habitats were being utilized by the Rio Grande silvery minnow and the fish community, a presence/absence study was conducted on eight constructed floodplains during 2008 and 2009, and one natural floodplain in 2008. A total of 14481 fish were captured in fyke nets during both years: 3528 fish were captured from constructed floodplains and 8410 were captured from the natural floodplain in 2008: 2543 fish were captured from the constructed floodplains in 2009. Of this total, 11602 of the fish were Rio Grande silvery minnow: 2180 Rio Grande silvery minnow were collected from constructed floodplains and 7356 from the natural floodplain in 2008; 2057 Rio Grande silvery minnow were collected from constructed floodplains in 2009. Gravid female and male expressing milt were collected both years. A total of 1173 unidentified larval fish and 363 Rio Grande silvery minnow eggs were also collected during the surveys. The results show that the Rio Grande silvery minnow and the fish community utilized the constructed and natural floodplains during the spring spawning season. © 2013 John Wiley & Sons, Ltd.

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