Actually, Mike, your first paragraph is simply false, as has been shown by the scientific literature for years now.
Climate projections to the year 2100 suggest that increases are expected in the incidence of drought and elevated growing-season temperatures.86 Elevated temperatures play a critical role in increasing the rate of drought onset, overall drought intensity, and drought impact through altered water availability and demand.87,88 Increased evaporation rates caused by high temperatures, in association with drought, will exacerbate plant stress,89 yield reduction,90,91,92 fire risks,93,94,95,96 and depletion of surface and groundwater resources.97,98,99,100 Soil carbon, important for enhancing plant productivity through a variety of mechanisms,101 is depleted during drought due to low biomass productivity, which in turn decreases the resilience of agroecosystems.23 In 2012, the United States experienced a severe and extensive drought, with more than two-thirds of its counties declared as disaster areas.102 This drought greatly affected livestock, wheat, corn, and soybean production in the Great Plains and Midwest regions 44,103,104,105 and accounted for $14.5 billion in loss payments by the federal crop insurance program.106 From 2013–2016, all of California faced serious drought conditions that depleted both reservoir and groundwater supplies. This lengthy drought, attributed in part to the influence of climate change,88,107 resulted in the overdrawing of groundwater, primarily for irrigation, leading to large declines in aquifer levels (Ch. 3: Water, KM 1).98,108 In 2014, the California state legislature passed the Sustainable Groundwater Management Act to develop groundwater management plans for sustainable groundwater use over the next 10–20 years.109,110,111
Average yields of many commodity crops (for example, corn, soybean, wheat, rice, sorghum, cotton, oats, and silage) decline beyond certain maximum temperature thresholds (in conjunction with rising atmospheric carbon dioxide [CO2] levels), and thus long-term temperature increases may reduce future yields under both irrigated and dryland production.37,91,92,97,103,112,113 In contrast, even with warmer temperatures, future yields for certain crops such as wheat, hay, and barley are projected to increase in some regions due to anticipated increases in precipitation and carbon fertilization.97,114 However, yields from major U.S. commodity crops are expected to decline as a consequence of higher temperatures,45 especially when these higher temperatures occur during critical periods of reproductive development.115,116,117 Increasing temperatures are also projected to have an impact on specialty crops (fruits, nuts, vegetables, and nursery crops) (Ch. 25: Southwest, KM 6), although the effects will be variable depending on the crops and where they are grown.118 Additional challenges involve the loss of synchrony of seasonal phenomena (for example, between crops and pollinators) (Ch. 7: Ecosystems; Ch. 25: Southwest, KM 6). Further, the interactive effects of rising atmospheric CO2 concentrations, elevated temperatures, and changes in other climate factors are expected to enhance weed competitiveness relative to crops,119 with temperature being a predominant factor.120,121
Irrigated agriculture is one of the major consumers of water supplies in the United States (Ch. 3: Water; Ch. 25: Southwest, KM 6). Irrigation is used for crop production in most of the western United States and since 2002 has expanded into the northern Midwest (Ch. 21: Midwest, KM 1) and Southeast (Ch. 19: Southeast, KM 4). Expanded irrigation is often proposed as a strategy to deal with increasing crop water demand due to higher trending temperatures coupled with decreasing growing-season precipitation. However, under long-term climate change, irrigated acreage is expected to decrease, due to a combination of declining water resources and a diminishing relative profitability of irrigated production.97 Continuing or expanding existing levels of irrigation will be limited by the availability of water in many areas.11,98,108 Surface water supplies are particularly vulnerable to shifts in precipitation and demand from nonagricultural sectors. Groundwater supplies are also in decline across major irrigated regions of the United States (see Case Study “Groundwater Depletion in the Ogallala Aquifer Region”) (see also Ch. 3: Water, Figure 3.2; Ch. 25: Southwest, KM 1; Ch. 23: S. Great Plains, KM 1).
Crop productivity and quality may also be significantly reduced due to increased crop water demand coupled with limited water availability122,123,124 as well as increased diseases and pest infestations (Ch. 25: Southwest, KM 6).125 The expected demand for higher crop productivity and anticipated climate change stresses have driven advancements in crop genetics.126,127 Seed companies have released numerous crop varieties that are tolerant to heat, drought, or pests and diseases. This trend is expected to continue as new crop varieties are developed to adapt to a changing climate.128 Recent advances in genetics have allowed researchers to access large and complex genomes of crops and their wild relatives.129 This has the potential to reduce the time and cost required to identify and incorporate useful traits in plant breeding and to develop crops that are more resilient to climate change. Currently, the United States has the largest gene bank in the world that manages publicly held crop germplasm (genetic material necessary for plant breeding). However, progress in this area has been modest despite advances in breeding techniques.130,131,132,133 Further, institutional factors such as intellectual property rights, and a lack of international access to crop genetic resources, are affecting the availability and utilization of genetic resources useful for adaptation to climate change.134 Investments by commercial firms alone are unlikely to be sufficient to maintain these resources, meaning higher levels of public investment would be needed for genetic resource conservation, characterization, and use. Societal concerns over certain crop breeding technologies likely will continue, but current assessments of genetically engineered crops have shown economic benefits for producers, with no substantial evidence of animal or human health or environmental impacts.135
As to your second paragraph, if you want want information about a specific location, you have to disclose where it is. Just as the increasing average temperature doesn't result in uniform increases everywhere, average sea level rise doesn't result in the same amount of increase at every location. Sea level rise is one effect of global warming that has been under predicted for many years now. In part, that has resulted from not understanding how soon Antarctica would start to lose mass. One of the dirty little secrets about the IPCC reports is that, if there isn't enough physical information known about a process, it is left out of the predictions and discussed in a footnote. For years, it was assumed that increased precipitation in the form of snow falling on the Antarctic continent (as a result of higher moisture content in the atmosphere) would exceed melting at the edges, so that Antarctica would continue to gain mass for a substantial period of time, thus reducing sea level rise. As we have learned more and more about the physical processes at work in Antarctica and gained the ability to measure the continent's mass, we discovered that Antarctica has become a contributor to sea level rise much sooner than expected. The future scenarios for sea level rise are included in the Working Group 1 Report of the AR 6. This post at Real Climate summarizes the report's section on sea level rise quite nicely.